Changelog

All notable changes to this project will be documented in this file. This project adheres to Semantic Versioning.

3.11.2 (2022-08-12)

Full Changelog

MSVC natvis visualizer does not work after introduction of inline ABI namespace #3696
The use of parenthesis gives compilation errors in some situations #3682
extern from/to_json result in linker error #3657
json_fwd.hpp no longer standalone #3656
regression: .value<size_t> is compilation error. #3655
Regression: no match for 'operator!=' comparing json_pointer and const char */string_t #3654
Regression: call to member function 'value' is ambiguous #3652
macOS 10.15 Actions runner image deprecation #3612
generate_natvis.py: validate version number; cleanup #3698 (falbrechtskirchinger)
Add Python script for generating Natvis file and update file for 3.11.2 #3697 (falbrechtskirchinger)
fix typo in json_pointer.md #3692 (eltociear)
Add amalgamated json-fwd.hpp to release #3687 (nlohmann)
Documentation updates for 3.11.2 #3686 (falbrechtskirchinger)
Make json_pointer usable as map key (again) #3685 (falbrechtskirchinger)
Deprecate json_pointer/string_t comparisons #3684 (falbrechtskirchinger)
Restructure inline namespace and allow version component to be disabled #3683 (falbrechtskirchinger)
Properly constrain non-string json_pointer overloads #3681 (falbrechtskirchinger)
Amalgamate the forward declaration header #3679 (falbrechtskirchinger)
Fix 'const' qualifier on bool& has no effect #3678 (falbrechtskirchinger)
Fix whitespace in workflow files #3675 (nlohmann)
Attempt to fix labeler permissions #3674 (falbrechtskirchinger)
Refine 'Publish documentation' workflow #3673 (falbrechtskirchinger)
Documentation change #3672 (nlohmann)
Add labeler action #3671 (nlohmann)
Complete contributor list #3670 (nlohmann)
Add json_pointer/string_t equality comparison operators #3664 (falbrechtskirchinger)
Reimplement value() access functions #3663 (falbrechtskirchinger)
Complete contributor list #3662 (nlohmann)
Adjust naming of GitHub action jobs #3661 (nlohmann)
Publish documentation on push to develop branch #3660 (nlohmann)
Add Discord badge to README #3651 (falbrechtskirchinger)
Miscellaneous small fixes #3643 (falbrechtskirchinger)
Minor BJData fixes #3637 (falbrechtskirchinger)
Update CI #3626 (falbrechtskirchinger)

v3.11.1 (2022-08-01)

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Regression: no matching literal operator for call to 'operator""_json' #3645
_json operator""() #3644
Fix global UDLs #3646 (falbrechtskirchinger)

v3.11.0 (2022-08-01)

Full Changelog

ICPC: warning #1098: the qualifier on this friend declaration is ignored #3632
Starting with 3.10.4, just adding \#include json.hpp causes compile error: `overload resolution selected deleted operator '=' #3620
xwidgets doesn't compile with version >3.10.3 #3602
json_pointer__pop_back.cpp example does not compile #3600
nlohmann::json::array 'push_back' is ambiguous #3589
Multiple versions causing conflict #3588
ERROR: ThreadSanitizer: SEGV on unknown address #3584
unicode4 test consistently fails on RISC-V hardware #3579
sax_parse(iterator, json_sax_t *) string callback clobbers spaces #3574
Nlohmann JSON Parse crash with raylib-cpp #3570
ordered_json doesn't accept keys of types other than string_t (e.g., string_view) #3558
turning an object into an array #3547
json:parse_bjdata_fuzzer: ASSERT: ref_stack.back()->is_array() #3541
Warning about potential null dereference in GCC 12.1 (Fedora 36) #3525
Enable 32bit unit test in CI #3524
Error when roundtripping BJData #3519
ASSERT error while parsing BJData #3513
An exception occurred when sending a string with double quotes #3504
Binary reader for BJData creates incorrect SAX events #3503
It can't support "nan", "inf", "-inf" for float type #3494
ASAN error while parsing BJData (Heap-buffer-overflow READ 1) #3492
UBSAN error while parsing BJData (Null-dereference) #3491
UBSAN error while parsing BJData (Invalid-bool-value) #3490
json:parse_bjdata_fuzzer reaches assertion #3475
Compilation with -fmodules-ts and use inside of a module #3472
json.exception.parse_error.101 only occurs outside of IDE #3467
json:parse_bjdata_fuzzer reaches assertion #3461
NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT can not parse { "key" : null} #3458
Unable to compile when using Microsoft's _CRTDBG #3457
Compilation errors when including <filesystem> and using --std=c++17 or above (MinGW/Win10) #3449
Weird things on for statement #3447
Parsing error when there is a json string within a Json #3445
ordered_json vs json types comparison #3443
Error occurred when converting nlohmann::json to std::any #3428
I was forced to report an assertion error when copying an array of strings #3419
About Serialization Error invalid UTF-8 byte at index #3414
Comparison of NaN differs between json and float #3409
when i use it in C++ sserver,it it constantly show that fatal error: adl_serializer.hpp: No such file or directory #3404
parse error #3403
CMake script MAIN_PROJECT always OFF #3390
Parser unable to handle large floating point numbers #3389
Compilation error if json_pointer is used with alternative string type #3388
Unit tests conversions & items fail to build (Clang <4.0/C++14 only) #3384
Regression test for #3070 is not being run and fails when enabled #3377
Refactor unit tests to use more convenient doctest assertion macros #3365
An json.h issue reported in a static code analyzer #3361
Mixing different JSON_DIAGNOSTICS settings in separately compiled units leads to core #3360
json::out_of_range exception matches against lot of others while testing #3352
use mipsel-openwrt-linux-g++ -std=c++11 to compile, it has some errors "error: 'snprintf' is not a member of 'std'" #3349
Add proper issue templates #3348
switch from json to ordered_json #3343
Json dump use to compilation errors #3339
Ambiguous conversion from nlohmann::basic_json<> to custom class. #3333
Iterator doesn't satisfy std::incrementable because post-increment may change constness #3331
Inconsistent handling of floating point numbers after parse() #3329
Documentation for ordered_json should show proper use of the parse() function. #3325
"type must be boolean, but is object" error thrown on non-boolean object #3319
Incomplete Type in request parms #3318
小米 MIX4 MIUI13 bug #3316
json.exception.parse_error.101 when parsing data received over a socket #3313
Parse to custom class from unordered_json breaks on G++11.2.0 with C++20 #3312
try to assign dumped string to a class member varible #3300
includedir in pkgconfig is error if install_headers() has subdir argument. #3284
SHA-256 sum of json-3.10.5.tar.xz changes over time (but not the content itself) #3281
items() method does not follow order of json message #3278
Perplexing template deduction failure serialising a 3rd party type using base class #3267
json.hpp 'isfinite' is not a member of 'std' also isinf; snprintf; stoull and to_string members of std #3263
JSON build fails for C++ cmake #3256
Unexpected implicit conversion #3254
Add a function that checks for valid json in a C++ string #3245
Replace use of standard IO from error handling #3239
Use Catch for unit tests #3232
Exception thrown during initialization causes a memory leak #3215
Tests failing when compiling with c++20 #3207
ambiguous regression #3204
Deserialization: if class is_constructible from std::string wrong from_json overload is being selected, compilation failed #3171
'clang++ ./json.hpp' with no usage: Compiler syntax problem in clang 3.7.0 (tizen :/ ) #3153
build failure on upcoming gcc-12: test/src/unit-regression1.cpp:392:22: error: ambiguous overload for 'operator=' #3138
Applying JSON patch creates parent object #3134
Iterators cannot be used with range-v3 #3130
std::shared_ptr<T> == nlohmann::json compiles, which seem undesirable #3026
Error in test\download_test_data.vcxproj custom build step when compiling with Visual Studio 2019 16.7.7 msbuild on Windows 10 #2593
Consider putting the user-defined literals in a namespace #1682
Using versioned namespaces #1539
How can I use std::string_view as the json_key to "operator []" ? #1529
serialize std::variant<...> #1261
Prepare 3.11.0 release #3635 (nlohmann)
Fix warning #3634 (nlohmann)
Add license header to new files #3633 (nlohmann)
Add a unit test including windows.h #3631 (falbrechtskirchinger)
Fixed latest build error in msvc platform #3630 (KsaNL)
Add regression tests for #3204 and #3333 #3629 (falbrechtskirchinger)
Fix patch::add creating nonexistent parents #3628 (falbrechtskirchinger)
Adjust JSON Pointer examples #3622 (nlohmann)
Disable exceptions on ICPC #3621 (falbrechtskirchinger)
build: install .pc and .cmake files to share/ #3619 (Tachi107)
Fix MinGW CI failures #3618 (falbrechtskirchinger)
Fix Unicode test timeout (for real this time!) #3614 (falbrechtskirchinger)
Use 'concurrency' in GitHub workflows #3610 (falbrechtskirchinger)
Use swap() by ADL #3609 (falbrechtskirchinger)
Move UDLs out of the global namespace #3605 (falbrechtskirchinger)
Re-add value_type detection to distinguish string types #3604 (falbrechtskirchinger)
Add operator<<(json_pointer) #3601 (falbrechtskirchinger)
Add documentation for comparing json and ordered_json #3599 (nlohmann)
Clean up after #3581 #3596 (nlohmann)
Add assertion if nullptr is passed to parse function #3593 (nlohmann)
Minor documentation fixes #3592 (nlohmann)
Add versioned, ABI-tagged inline namespace and namespace macros #3590 (falbrechtskirchinger)
Add badge for https://repology.org/project/nlohmann-json/versions #3586 (nlohmann)
Add error message if test suite cannot be found #3585 (nlohmann)
add patch_inplace function #3581 (wolfv)
Enable overriding test properties and set Unicode test timeouts #3580 (falbrechtskirchinger)
Ignore output directory #3572 (NN---)
Optimize output vector adapter write #3569 (romainreignier)
Add overloads for more key types to ordered_map and fix ordered_map::erase(first, last) with first == last #3564 (falbrechtskirchinger)
Make certain usage patterns more prominent in the README #3557 (jez)
CI: fix "JSON_MultipleHeaders" option spelling #3555 (karzhenkov)
More documentation updates for 3.11.0 #3553 (falbrechtskirchinger)
Use DOCTEST_* compiler macros and suppress pragmas warning #3550 (falbrechtskirchinger)
Add unit test to make sure iterator_input_adapter advances iterators correctly #3548 (falbrechtskirchinger)
Use REUSE framework #3546 (nlohmann)
Use std::iterator_traits to extract iterator_category #3544 (Mike-Leo-Smith)
BJData dimension length can not be string_t::npos, fix #3541 #3543 (fangq)
Allow disabling default enum conversions #3536 (zxey)
Add to_json() for std::vector<bool>::reference #3534 (falbrechtskirchinger)
CI: Enable 32bit unit test (3) #3532 (falbrechtskirchinger)
Use new CI image #3528 (nlohmann)
Fix ndarray dimension signedness, fix ndarray length overflow (2); add 32bit unit test #3523 (falbrechtskirchinger)
Small documentation fixes #3520 (nlohmann)
Add assertion to converting constructor #3517 (falbrechtskirchinger)
CI: Remove -Wstrict-overflow #3516 (falbrechtskirchinger)
Fix nlohmann/json#3513, explain is_ndarray flag #3514 (fangq)
Prevent ndarray size vector from recursive use, fix nlohmann/json#3503 #3505 (fangq)
prevent ndarray dimension vector from recusive array, nlohmann/json#3500 #3502 (fangq)
Discard optimized containers with negative counts in UBJSON/BJData (#3491,#3492,#3490) #3500 (fangq)
Update json.hpp #3499 (ivanovmp)
Add assertion for invariant in SAX-DOM parser #3498 (nlohmann)
Add more macOS builders #3485 (nlohmann)
change bjdata ndarray flag to detect negative size, as part of #3475 #3479 (fangq)
Document fuzzer usage #3478 (nlohmann)
Add build step for ICPC (with fixes) #3465 (falbrechtskirchinger)
Complete documentation for 3.11.0 #3464 (nlohmann)
Handle invalid BJData optimized type, fix #3461 #3463 (fangq)
Reorganize directories #3462 (nlohmann)
Enable rapid testing and development on Compiler Explorer #3456 (falbrechtskirchinger)
cpplint 1.6.0 #3454 (nlohmann)
Disable regression test for #3070 on GCC <8.4 #3451 (falbrechtskirchinger)
Fix C++20/gcc-12 issues (Part 2) #3446 (falbrechtskirchinger)
Overwork documentation #3444 (nlohmann)
Fix typo in basic_json documentation #3439 (jhnlee)
Exclude std::any from implicit conversion (fixes #3428) #3437 (falbrechtskirchinger)
Document which version introduced the macros #3431 (nlohmann)
Fix constraints on from_json() for strings (fixes #3171, #3267, #3312, #3384) #3427 (falbrechtskirchinger)
at.md: fix typo #3426 (heinemml)
Implement support for string_view (attempt no. 3) #3423 (falbrechtskirchinger)
CI: speedup AppVeyor builds by ~30% #3422 (falbrechtskirchinger)
Restore disabled check for #3070 (except on MSVC) #3421 (falbrechtskirchinger)
Update CI image #3420 (nlohmann)
Add check if different version is also included #3418 (nlohmann)
Report the right __cplusplus value for MSVC in basic_json meta() #3417 (flagarde)
CI: windows-2016 has been deprecated; remove jobs #3416 (falbrechtskirchinger)
Re-template json_pointer on string type #3415 (falbrechtskirchinger)
Refactor unit tests to use more convenient doctest assertion macros (Part 2) #3405 (kkarbowiak)
Refactor unit tests to use more convenient doctest assertion macros #3393 (kkarbowiak)
Improve unit testing (Part 1) #3380 (falbrechtskirchinger)
Fix C++20/gcc-12 issues (Part 1) #3379 (falbrechtskirchinger)
Add clarification to avoid misunderstanding that cause #3360 #3378 (puffetto)
Fix ordered_map ctor with initializer_list (fixes #3343) #3370 (falbrechtskirchinger)
Fix and update CI #3368 (falbrechtskirchinger)
FetchContent_MakeAvailable #3351 (nlohmann)
Avoid clash with Arduino defines #3338 (DarkZeros)
Support UBJSON-derived Binary JData (BJData) format #3336 (fangq)
Make iterator operator++/--(int) equality-preserving #3332 (falbrechtskirchinger)
Add note on parsing ordered_json #3326 (nlohmann)
Fix CITATION.cff and add automatic validation of your citation metadata #3320 (fdiblen)
.github/workflows/windows.yml: Add support for Visual Studio 2022 #3295 (t-b)
Add maintainer targets to create source archive #3289 (nlohmann)
Fix a typo #3265 (fhuberts)
Fix typo #3249 (rex4539)
Add documentation for JSON Lines #3247 (nlohmann)
Improve documentation InputType and IteratorType #3246 (nlohmann)
Remove stringstream #3244 (nlohmann)
fix _MSC_VER version to check for std::filesystem #3240 (gcerretani)
Add macros NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT and ..._NON_INTRUSIVE_WITH_DEFAULT #3143 (pketelsen)

v3.10.5 (2022-01-03)

Full Changelog

#include <filesystem> doesn't work with gcc-7 when -std=c++17 is specified. #3203
Not able to use nlohmann json with c++ code built using emscripten to wasm #3200
Warning for shadowed variables #3188
Accessing missing keys on const json object leads to assert #3183
Data member is available, but null is reported, and program throws error #3173
serialization problem, from_json need construct new object #3169
std::filesystem unavailable on macOS lower deployment targets #3156
[json.exception.type_error.305] cannot use operator[] with a string argument with string #3151
json::dump() is not compatible with C++ standards #3147
Issue with json::parse decoding codepoints #3142
Simple parse of json object thinks it should be an array #3136
How to properly read a Json string that may be null in some cases? #3135
Deadlock on create json - windows only #3129
Wrong parsing of int64 values nearest of limit #3126
ordered_json doesn't support range based erase #3108
Apple build failed with json/single_include/nlohmann/json.hpp:4384:57: 'path' is unavailable #3097
GCC 7.5.0 with --std=c++17: filesystem: No such file or directory #3090
Drop Travis CI #3087
ordered_json::reset() compile error with nvcc #3013
Support for unordered_map as object_t #2932
Compiler warning with Intel compiler, same as #755 #2712
Compiler warnings with NVCC 11.2 #2676
some static analysis warning at line 11317 #1390
Compiling with icpc #755
Fix compilation error with NVCC #3234 (nlohmann)
Remove Travis CI #3233 (nlohmann)
Add build step for NVCC and fix a warning #3227 (nlohmann)
Update cpplint #3225 (nlohmann)
Fix: Warning for shadowed variables (#3188) #3193 (kernie)
Fix FAQ hyperlink typo in readme #3148 (Prince-Mendiratta)
Docs: Update skip_comments to ignore_comments #3145 (daniel-kun)
fix typos in documentation #3140 (striezel)
Fix spelling #3125 (axic)
Extend std specializations #3121 (nlohmann)
Add missing erase(first, last) function to ordered_map #3109 (nlohmann)
Fix typos in operator[] documentation #3102 (axnsan12)
Add C++17 copies of the test binaries #3101 (nlohmann)
Add examples for parsing from iterator pair #3100 (nlohmann)
Update CI #3088 (nlohmann)
Consolidate documentation #3071 (nlohmann)
Add recursive update function #3069 (nlohmann)

v3.10.4 (2021-10-16)

Full Changelog

Compiler error in output serializer due to 'incompatible initializer' #3081
Strange behaviour when using std::sort on std::vector<json> #3080
Unhandled exception: nlohmann::detail::parse_error #3078
explicit constructor with default does not compile #3077
Parse an object but get an array using GCC #3076
Version 3.10.3 breaks backward-compatibility with 3.10.2 #3070
Feature request, Add to_json/from_json to align with other to/from binary api. #3067
vcpkg is out of date #3066
Revert invalid fix #3082 (nlohmann)
Allow to use get with explicit constructor #3079 (nlohmann)
fix std::filesystem::path regression #3073 (theodelrieu)

v3.10.3 (2021-10-08)

Full Changelog

Parsing an emtpy string returns a string with size 1 instead of expected 0 #3057
Linking error "duplicate symbol: std::type_info::operator==" on static build with MinGW #3042
Yet another assertion failure when inserting into arrays with JSON_DIAGNOSTICS set #3032
accept and parse function not work well with a pure number string #3029
push_back doesn't work for serializing containers #3027
Strange behaviour when creating array with single element #3025
Input ordered_json doesn't work #3023
Issue iterating through 'items' #3021
Cannot spell the namespace right #3015
JSON Parse error when reading json object from file #3011
Parent pointer not properly set when using update() #3007
Overwriting terminated null character #3001
'operator =' is ambiguous on VS2017 #2997
JSON Patch for Array Elements #2994
JSON Parse throwing error #2983
to_{binary format} does not provide a mechanism for specifying a custom allocator for the returned type. #2982
3.10.1 zip json.hpp has version number 3.10.0 instead of 3.10.1 #2973
Assertion failure when serializing array with JSON_DIAGNOSTICS set #2926
Fix Clang version #3040 (nlohmann)
Fix assertion failure for JSON_DIAGNOSTICS #3037 (carlsmedstad)
meta: fix is_compatible/constructible traits #3020 (theodelrieu)
Set parent pointers for values inserted via update() (fixes #3007). #3008 (AnthonyVH)
Allow allocators for output_vector_adapter #2989 (nlohmann)
Re-add Clang 12 #2986 (nlohmann)
Use new Docker image #2981 (nlohmann)
Update docset generation script #2967 (nlohmann)

v3.10.2 (2021-08-26)

Full Changelog

Annoying -Wundef on new JSON_DIAGNOSTICS macro #2975
+= issue with multiple redirection. #2970
"incomplete type ‘nlohmann::detail::wide_string_input_helper" compilation error #2969
Fix -Wunused warnings on JSON_DIAGNOSTICS #2976 (gcerretani)

v3.10.1 (2021-08-24)

Full Changelog

JSON_DIAGNOSTICS assertion for ordered_json #2962
Inserting in unordered json using a pointer retains the leading slash #2958
Test #9: test-cbor test case sample.json fails in debug mode - Stack overflow #2955
3.10.0 broke at least the Bear project #2953
2 tests fail in 3.10.0: cmake_fetch_content_configure, cmake_fetch_content_build #2951
ctest (58+60,/67 cmake_import_configure) fails when build with -D JSON_Install:BOOL=OFF because of missing nlohmann_jsonTargets.cmake #2946
Document vcpkg usage #2944
Linker error LNK2005 when compiling (x64) json-3.10.0.zip with Visual Studio 2019 16.11.1 #2941
Move Travis jobs to travis-ci.com #2938
Fixed typo in docs/api/basic_json/parse.md #2968 (mbadhan)
Add link to Homebrew package #2966 (nlohmann)
Fix parent update for diagnostics with ordered_json #2963 (nlohmann)
Set stack size for some unit tests when using MSVC #2961 (nlohmann)
Add regression test #2960 (nlohmann)
Update Travis badge #2959 (nlohmann)
Fix some extra ";" clang warnings #2957 (Hallot)
Add documentation for integration via vcpkg #2954 (nlohmann)
Avoid duplicate AppVeyor builds #2952 (nlohmann)
🚨 fix gdb_pretty_printer failure on basic types #2950 (senyai)
Add header to use value_t #2948 (nlohmann)
Skip some tests if JSON_Install is not set #2947 (nlohmann)
Remove outdated json_unit test binary #2945 (nlohmann)
Updating the Homebrew Command #2943 (amirmasoudabdol)

v3.10.0 (2021-08-17)

Full Changelog

Latest version 3.9.1 uses throw instead of JSON_THROW in the amalgamated json.hpp file #2934
Copy to a variable inside a Structure #2933
warning C4068: unknown pragma 'GCC' on MSVC/cl #2924
Errors during ninja test #2918
compiler warning: "not return a value" #2917
Comparison floating points causes warning #2909
Why can't I have std::vector<json&> testList? #2900
[json.hpp] from releases doesnt work #2897
g++ (11) -Wuseless-cast gives lots of warnings #2893
Cannot serialize and immediatly deserialize json to/from bson #2892
Floating-point precision conversion error #2876
How to avoid escaping for an already escaped string in .dump() #2870
can't parse std::vector<std::byte> #2869
ASAN detects memory leaks #2865
Binary subtype field cannot represent all CBOR tags #2863
string literals possibly being parsed as another type due to the presence of only digits and full-stops #2852
json::parse() works only with absolute paths #2851
Compiler Warnings on Raspberry Pi OS #2850
Braced initialization and aggregate initialization behavior is different for json::array() function call. #2848
3.9.1: test suite is failing #2845
Documentation for macro JSON_NO_IO is missing #2842
Assertion failure when inserting into arrays with JSON_DIAGNOSTICS set #2838
HELP! There is a memory leak in the code?! #2837
Elegant conversion of a 2-D-json array to a standard C++ array #2805
Swift Package Manager support #2802
Referencing a subkey which doesn't exist gives crash #2797
Failed benchmark due to renamed branch #2796
Build Errors with VS 2019 and json Version 3.9.1 when attempting to replicate SAX Example #2782
Value with spaces cannot be parsed #2781
[Question] CBOR rfc support. #2779
Using JSON.hpp header file in Visual Studio 2013 (C++ Project) #2775
compilation error on clang-8 + C++17 #2759
Undefined symbol EOF #2755
Parsing a string into json object behaves differently under g++ and MinGW compilers. #2746
big git history size #2742
How to get reference of std::vector<T> #2735
CMake failure in VS2019 Community #2734
Possibility to use with custom c++ version to use in intel sgx enclaves #2730
Possibility to use without the dependency to file io and streams to use in intel sgx enclaves #2728
error C2784& error C2839... in my visual studio 2015 compiler #2726
-fno-expection not respected anymore in 3.9.1 #2725
When exceptions disabled with JSON_NOEXCEPTION, lib just aborts without any message #2724
Critical error detected c0000374 on windows10 msvc 2019 16.8.5 #2710
unused parameter error/warning #2706
How to store data into a Map from json file #2691
Tests do not compile with pre-release glibc #2686
compile errors .... chromium-style #2680
.dump() not allowing compact form #2678
error: no matching function for call to ‘nlohmann::basic_json<>::value(int, std::set<int>&)’ #2671
Compiler warning: unused parameter #2668
Deserializing to a struct as shown on the project homepage throws compile time errors #2665
Unable to compile on MSVC 2019 with SDL checking enabled: This function or variable may be unsafe #2664
terminating with uncaught exception of type nlohmann::detail::type_error: [json.exception.type_error.302] type must be array, but is object #2661
unused-parameter on OSX when Diagnostics is off #2658
std::pair wrong serialization #2655
The result of json is_number_integer() function is wrong when read a json file #2653
2 backslash cause problem #2652
No support for using an external/system copy of Hedley #2651
error: incomplete type 'qfloat16' used in type trait expression #2650
Unused variable in exception class when not using improved diagnostics #2646
I am trying to do this - converting from wstring works incorrectly! #2642
Exception 207 On ARM Processor During Literal String Parsing #2634
double free or corruption (!prev) error on Json push_back and write #2632
nlohmann::detail::parse_error: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F) #2629
please allow disabling implicit conversions in non-single-file use #2621
Preserve decimal formatting #2618
Visual Studio Visual Assist code issues reported by VA code inspection of file json.hpp #2615
Missing get function and no viable overloaded '=' on mac #2610
corruption when parse from string #2603
Parse from byte-vector results in compile error #2602
Memory leak when working on ARM Linux #2601
Unhandled exception in test-cbor.exe Stack overflow when debugging project with Visual Studio 2019 16.7.7 compiled with c++17 or c++latest #2598
Error in download_test_data.vcxproj when compiling with Visual Studio 2019 16.7.7 Professional msbuild on Windows 10 2004 Professional #2594
Warnings C4715 and C4127 when building json-3.9.1 with Visual Studio 2019 16.7.7 #2592
I tried some change to dump() for [1,2,3...] #2584
try/catch block does not catch parsing error #2579
Serializing uint64_t is broken for large values #2578
deserializing arrays should be part of the library #2575
Deserialization to std::array with non-default constructable types fails #2574
Compilation error when trying to use same type for number_integer_t and number_unsigned_t in basic_json template specification. #2573
compiler error: directive output may be truncated writing between 2 and 8 bytes #2572
Incorrect convert map to json when key cannot construct an string i.e. int #2564
no matching function for call to ‘nlohmann::basic_json<>::basic_json(<brace-enclosed initializer list>)’ #2559
type_error factory creates a dangling pointer (in VisualStudio 2019) #2535
Cannot assign from ordered_json vector<CustomStruct> to value in not ordered json #2528
Qt6: Break changes #2519
valgrind memcheck Illegal instruction when use nlohmann::json::parse #2518
Buffer overflow #2515
Including CTest in the top-level CMakeLists.txt sets BUILD_TESTING=ON for parent projects #2513
Compilation error when using NLOHMANN_JSON_SERIALIZE_ENUM ordered_json on libc++ #2491
Missing "void insert( InputIt first, InputIt last );" overload in nlohmann::ordered_map #2490
Could not find a package configuration file provided by "nlohmann_json" #2482
json becomes empty for unknown reason #2470
Using std::wstring as StringType fails compiling #2459
Sample code in GIF slide outdated (cannot use emplace() with array) #2457
from_json<std::wstring> is treated as an array on latest MSVC #2453
MemorySanitizer: use-of-uninitialized-value #2449
I need help #2441
type conversion failing with clang ext_vector_type #2436
json::parse() can't be resolved under specific circumstances #2427
from_*(ptr, len) deprecation #2426
Error ONLY in release mode #2425
"Custom data source" exemple make no sense #2423
Refuses to compile in project #2419
Compilation failure of tests with C++20 standard (caused by change of u8 literals) #2413
No matching function for call to 'input_adapter' under Xcode of with nlohmann version 3.9.1 #2412
Git tags are not valid semvers #2409
after dump, stderr output disappear #2403
Using custom string. #2398
value() throws unhandled exception for partially specified json object #2393
assertion on runtime causes program to stop when accessing const json with missing key #2392
Usage with -fno-elide-constructors causes dump() output to be array of nulls #2387
Build fails with clang-cl due to override of CMAKE_CXX_COMPILER(?) #2384
std::optional not working with primitive types #2383
Unexpected array when initializing a json const& on gcc 4.8.5 using uniform syntax #2370
setprecision support #2362
json::parse(allow_exceptions = false) documentation is misleading. #2360
std::begin and std::end usage without specifying std namespace #2359
Custom object conversion to json hangs in background thread #2358
Add support of nullable fields to NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE and NLOHMANN_DEFINE_TYPE_INTRUSIVE #2356
the portfile for the vcpkg is not working. #2351
Compiler warns of implicit fallthrough when defining preprocessor macro NDEBUG #2348
Compile error on Intel compiler running in Windows #2346
Build error caused by overwriting CMAKE_CXX_COMPILER #2343
Error: an attribute list cannot appear here JSON_HEDLEY_DEPRECATED_FOR #2342
compiler warning #2341
3.9.0: tests make build non-reproducible #2324
Initialization different between gcc/clang #2311
Attempt to get() a numeric value as a type which cannot represent it should throw #2310
Surprising behaviour with overloaded operators #2256
ADL issue in input_adapter #2248
Output adapters should be templated. #2172
error when using nlohmann::json, std::function and std::bind #2147
Remove undefined behavior for const operator[] #2111
json({}) gives null instead of empty object with GCC and -std=c++17 #2046
GDB pretty printing support #1952
Always compile tests with all warnings enabled and error out on warnings #1798
Fixes Cppcheck warnings #1759
How to get position info or parser context with custom from_json() that may throw exceptions? #1508
Suggestion to improve value() accessors with respect to move semantics #1275
Add Key name to Exception #932
Overwork warning flags #2936 (nlohmann)
Treat MSVC warnings as errors #2930 (nlohmann)
All: fix warnings when compiling with -Wswitch-enum #2927 (fhuberts)
Guard GCC pragmas #2925 (nlohmann)
Supress -Wfloat-equal on intended float comparisions #2911 (Finkman)
Fix binary subtypes #2908 (nlohmann)
Fix useless-cast warnings #2902 (nlohmann)
Add regression test #2898 (nlohmann)
Refactor Unicode tests #2889 (nlohmann)
CMake cleanup #2885 (nlohmann)
Avoid string in case of empty CBOR objects #2879 (nlohmann)
Suppress C4127 warning in unit-json_pointer.cpp #2875 (nlohmann)
Fix truncation warning #2874 (nlohmann)
Fix memory leak in to_json #2872 (nlohmann)
Fix assertion failure in diagnostics #2866 (nlohmann)
Update documentation #2861 (nlohmann)
Consistency with using in README.md #2826 (justanotheranonymoususer)
Properly constrain the basic_json conversion operator #2825 (ldionne)
Fix CI #2817 (nlohmann)
Specified git branch for google benchmark fetch in benchmark test #2795 (grafail)
Add C++ standards to macOS matrix #2790 (nlohmann)
Update URLs to HTTPS #2789 (TotalCaesar659)
Link to Conan Center package added #2771 (offa)
Keep consistent formatting #2770 (jasmcaus)
Add a cmake option to use SYSTEM in target_include_directories #2762 (jpl-mac)
replace EOF with std::char_traits<char>::eof() #2756 (nlohmann)
Fix typo in README #2754 (mortenfyhn)
Update documentation #2749 (nlohmann)
Add documentation for numbers #2747 (nlohmann)
Use Clang 12 in CI #2737 (nlohmann)
Fixes #2730 #2731 (theShmoo)
Possibility to use without the dependency to file io and streams to use in intel sgx enclaves #2729 (theShmoo)
Update json.hpp #2707 (raduteo)
pkg-config.pc.in: Don't concatenate paths #2690 (doronbehar)
add more CI steps #2689 (nlohmann)
Update doctest from 2.4.4 to 2.4.6 (fixes #2686) #2687 (musicinmybrain)
License fix #2683 (nlohmann)
Update parse_exceptions.md - correct json::exception::parse_error #2679 (frasermarlow)
Remove HEDLEY annotation from exception::what() #2673 (remyjette)
Fix amount of entries in the json object #2659 (abbaswasim)
Fix missing 1.78 in example in README.md #2625 (wawiesel)
Add GDB pretty printer #2607 (nlohmann)
readme: fix tilde character display #2582 (bl-ue)
Add support for deserialization of STL containers of non-default constructable types (fixes #2574). #2576 (AnthonyVH)
Better diagnostics #2562 (nlohmann)
CI targets #2561 (nlohmann)
Add switch to skip non-reproducible tests. #2560 (nlohmann)
Fix compilation of input_adapter(container) in edge cases #2553 (jasujm)
Allow parsing from std::byte containers #2550 (nlohmann)
Travis doesn't run any tests in C++17 mode #2540 (karzhenkov)
Doctest is updated to v2.4.3 #2538 (YarikTH)
Fix warnings #2537 (nlohmann)
Fix a shadowing warning #2536 (nlohmann)
Clarify license of is_complete_type implementation #2534 (nlohmann)
Do not unconditionally redefine C++14 constructs #2533 (nlohmann)
Doctest is updated to v2.4.1 #2525 (YarikTH)
Add MAIN_PROJECT check for test and install options #2514 (globberwops)
Ranged insert test section is added in unit-ordered_json.cpp #2512 (YarikTH)
Add asserts to suppress C28020 #2447 (jbzdarkid)
Change argument name "subtype" in byte_container_with_subtype #2444 (linev)
📝 add CPM.Cmake example #2406 (leozz37)
Fix move constructor of json_ref #2405 (karzhenkov)
Properly select "Release" build for Travis #2375 (karzhenkov)
Update Hedley #2367 (nlohmann)
Fix and extend documentation of discarded values #2363 (nlohmann)
Fix typos in documentation #2354 (rbuch)
Remove "#define private public" from tests #2352 (nlohmann)
Remove -Wimplicit-fallthrough warning #2349 (nlohmann)
Fix code to work without exceptions #2347 (nlohmann)
fix cmake script overwriting compiler path #2344 (ongjunjie)

v3.9.1 (2020-08-06)

Full Changelog

Can't parse not formatted JSON. #2340
parse returns desired array contained in array when JSON text begins with square bracket on gcc 7.5.0 #2339
Unexpected deserialization difference between Mac and Linux #2338
Reading ordered_json from file causes compile error #2331
ignore_comment=true fails on multiple consecutive lines starting with comments #2330
Update documentation about Homebrew installation and CMake integration - Homebrew #2326
Chinese character initialize error #2325
json.update and vector<pair>does not work with ordered_json #2315
Ambiguous call to overloaded function #2210
Fix fallthrough warning #2333 (nlohmann)
Fix lexer to properly cope with repeated comments #2332 (nlohmann)
Fix name of Homebrew formula in documentation #2327 (nlohmann)
fix typo #2320 (wx257osn2)
Fix a bug due to missing overloads in ordered_map container #2319 (nlohmann)
cmake: install pkg-config file relative to current_binary_dir #2318 (eli-schwartz)
Fixed installation of pkg-config file on other than Ubuntu #2314 (xvitaly)

v3.9.0 (2020-07-27)

Full Changelog

Unknown Type Name clang error when using NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE #2313
Clang 10.0 / GCC 10.1 warnings on disabled exceptions #2304
Application stalls indefinitely with message byte size 10 #2293
linker error #2292
Add support for high-precision numbers in UBJSON encoding #2286
NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE fails if the length of the argument is 10 #2280
Custom types : MACRO expansion bug #2267
to/from_json Failing To Convert String #2238
clang 9.0 report warning: unused type alias 'size_type' [-Wunused-local-typedef] #2221
Enormous array created when working with map<int,T> #2220
Can I disable sorting of json values #2219
Getting Qt types to work #2217
Convert to Qt QVariant #2216
How to custom serialize same data type of vector? #2215
json constructor does not support std::optional #2214
Failing to Parse Valid JSON #2209
(De-)Serialization of std::variant with namespaces #2208
Addint support for complex type #2207
array_index possible out of range #2205
Object deserialized as array #2204
Sending to a function a reference to a sub-branch #2200
How to Serialize derived class to JSON object? #2199
JSON incorrectly serialized #2198
Exception Unhandled out_of_range error #2197
msgpack serialisation : float is treated as 64bit float, not 32bit float. #2196
Is it possible to use compile-time type guarantees for JSON structures? #2195
Question : performance against python dict #2194
vs2017 compile error #2192
Check if a key exists #2191
Failed to run tests due to missing test data on builders without Internet access #2190
3.8.0: unit-cbor.cpp test failures #2189
'nlohmann/json.hpp' file not found #2188
How to send json data over the wire? #2185
Ubuntu 16 not supporting nlohmann/json? #2184
.get<std::string> causing emdash errors #2180
Object properties should not be re-sorted alphabetically #2179
Custom type registration : instrusive API #2175
Many version of the function "void to_json(json& j, const MyStruct& struct)" #2171
How should strings be escaped? #2155
Adding a value to an existing json puts it at the beginning instead of the end #2149
The header file is big, can we use what we need. #2134
Changing the default format for unordered_map (or other set) #2132
Getting size of deserialized bson document #2131
implicit conversion failure #2128
Error thrown when parsing in a subclass #2124
explicit conversion to string not considered for std::map keys in GCC8 #2096
Add support for JSONC #2061
Library provides template arg for string_type but assumes std::string in some places #2059
incremental parsing with sax_parser #2030
Question about flatten and unflatten #1989
CBOR parser doesn't skip tags #1968
Compilation failure using Clang on Windows #1898
Fail to build when including json.hpp as a system include #1818
Parsing string into json doesn't preserve the order correctly. #1817
[C++17] Allow std::optional to convert to nlohmann::json #1749
How can I save json object in file in order? #1717
Support for Comments #1513
clang compiler: error : unknown type name 'not' #1119
dump() without alphabetical order #1106
operator T() considered harmful #958
Order of the elements in JSON object #952
How to prevent alphabetical sorting of data? #727
Why is an object ordering values by Alphabetical Order? #660
Feature request: Comments #597
Head Elements Sorting #543
Automatic ordered JSON #424
Support for comments. #376
Optional comment support. #363
Strip comments / Minify #294
maintaining order of keys during iteration #106
Update documentation #2312 (nlohmann)
Fix bug in CBOR tag handling #2308 (nlohmann)
added inline to NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE macro #2306 (jwittbrodt)
fixes unused variable 'ex' for #2304 #2305 (AODQ)
Cleanup #2303 (nlohmann)
Add test with multiple translation units #2301 (nlohmann)
Merge GitHub actions #2300 (nlohmann)
Fix unused parameter #2299 (nlohmann)
Add support for high-precision numbers in UBJSON encoding #2297 (nlohmann)
fix eof for get_binary and get_string #2294 (jprochazk)
Serialisation macros: increase upper bound on number of member variables #2287 (pfeatherstone)
add inline specifier for detail::combine #2285 (T0b1-iOS)
Add static assertion for missing binary function in SAX interface #2282 (nlohmann)
Add test for target_include_directories #2279 (nlohmann)
Clean up maintainer Makefiles and fix some linter warnings #2274 (nlohmann)
Add option to ignore CBOR tags #2273 (nlohmann)
Hash function without allocation #2269 (nlohmann)
Add ClangCL for MSVC #2268 (t-b)
Makefile: Always use SED variable #2264 (t-b)
Add Xcode 12 CI #2262 (nlohmann)
Make library work with Clang on Windows #2259 (nlohmann)
Add ordered_json specialization with ordered object keys #2258 (nlohmann)
Add pkg-config file #2253 (ericonr)
Fix regression from #2181 #2251 (nlohmann)
Tag binary values in cbor if set #2244 (matthewbauer)
Make assert configurable via JSON_ASSERT #2242 (nlohmann)
Add specialization of get_to #2233 (nlohmann)
Refine documentation of error_handler parameter #2232 (nlohmann)
Simplify conversion from/to custom types #2225 (nlohmann)
Remove unused typedefs #2224 (nlohmann)
Enable CMake policy CMP0077 #2222 (alexreinking)
Add option to ignore comments in parse/accept functions #2212 (nlohmann)
Fix Clang-Tidy warnings #2211 (nlohmann)
Simple ordered_json that works on all supported compilers #2206 (gatopeich)
Use unsigned indizies for array index in json pointer #2203 (t-b)
Add option to not rely on Internet connectivity during test stage #2202 (nlohmann)
Serialize floating-point numbers with 32 bit when possible (MessagePack) #2201 (nlohmann)
Fix consistency in function int_to_string() #2193 (dota17)
Fix issue#1275 #2181 (dota17)
C++20 support by removing swap specialization #2176 (gracicot)
Feat/explicit conversion operator #1559 (theodelrieu)

v3.8.0 (2020-06-14)

Full Changelog

sorry delete this issue, i'm stupid #2187
Append to a std::nlohmann::json type #2186
Some troubles to compile the last revision #2177
# Top level CMakeLists.txt project(FOO) ... option(FOO_USE_EXTERNAL_JSON "Use an external JSON library" OFF) ... add_subdirectory(thirdparty) ... add_library(foo ...) ... # Note that the namespaced target will always be available regardless of the # import method target_link_libraries(foo PRIVATE nlohmann_json::nlohmann_json) #2170
https://www.github.com/nlohmann/json/tree/develop/include%2Fnlohmann%2Fjson_fwd.hpp #2169
templated from_json of non primitive types causes gcc error #2168
few warnings/errors in copy assignment #2167
Different output when upgrading from clang 9 to clang 10 #2166
Cannot build with VS 2019 / C++17 #2163
Q: When I received an illegal string,How the program knows? #2162
Problem while reading a json file #2161
converting std::chrono::system_clock::time_point to json. #2159
how to parse vector<struct> format #2157
nlohmann::json and =nullptr #2156
test-cbor fails #2154
Accessing array inside array syntax? #2151
Best way to catch errors when querying json #2150
JSON Data Mapping Key-Value from other Key-Value #2148
Conflicts with std <any> compiling with GCC 10 #2146
Incorrect CMake FetchContent example #2142
Help for a Beginner? #2141
Read Json from File #2139
How to feed a predefined integer value into json string #2138
getting json array inside json object #2135
Add .contains example to doc #2133
Is it safe to return string.c_str() received from get()? #2130
GCC 10: Compilation error when including any before including json header in C++17 mode #2129
Intersection of two json files #2127
App crashes when dump method called for non ascii chars. #2126
iterator based erase method #2122
quick and convenient api to get/set nested json values #2120
assigning nullptr to std::string #2118
usless_cast warnings with gcc 9.3 and 10.1 (C++17) #2114
clang 10 warning #2113
Possible incorrect _MSC_VER reference #2112
warning under gcc 10.1 #2110
Wdeprecated-declarations from GCC v10.1.0 #2109
Global std::vector from json #2108
heap-buffer-overflow when using nlohmann/json, ASAN, and gtest #2107
exception 0x770DC5AF when i read an special char in json file #2106
json::parse() fails to parse a dump(2,' ') output, yet does successfully parse dump() #2105
run test-udt error in MSVC 19.16.27034.0 #2103
Unable to dump to stringstream #2102
Can't ad an object in another objet #2101
Implicit conversion causes "cannot use operator[] with a string argument with string" #2098
C++20: char8_t #2097
Compilation issues when included in project #2094
string value with null character causes infinite loop #2093
corrupted size vs. prev_size (aborted) #2092
Get string field content without return std::string copy #2091
JSON Comments (JSON 5) #2090
Remove #include <ciso646> #2089
JSON library as a git submodule #2088
Apple Clang 11.0.3 on MacOS Catalina 10.15.4 not compiling #2087
Value function return empty object even if it exist #2086
Cannot debug but Run works #2085
Question about serialization. #2084
How to include in an external project #2083
Missing tests for binary values #2082
How to override default string serialization? #2079
Can't have a json type as a property in an arbitrary type #2078
New release? #2075
CMake FetchContent > Updating the documentation? #2073
How to convert STL Vector (of user defined type) to Json #2072
how to make an array of objects #2070
‘__int64’ was not declared #2068
[json.exception.type_error.317] cannot serialize binary data to text JSON #2067
Unexpected end of input; expected '[', '{', or a literal #2066
Json structure can be nested? #2065
Bug: returning reference to local temporary object #2064
Allow to use non strict parsing #2063
Crashing on json::at #2062
How to convert a const std::vector<char8_t> message to a json, to be able to parse it and extract information from it? Can you point to any examples? #2058
Nice library #2057
json.hpp:15372:22: error: expected unqualified-id if (not std::isfinite(x)): Started getting this bug after updating my XCode #2056
Confused as how I can extract the values from the JSON object. #2055
Warnings with GCC 10 #2052
Warnings with Clang 10 #2049
Update doctest #2048
Unclear error message: "cannot use operator[] with a string argument with array" #2047
Serializing std::variant<T, std::vector<T>> #2045
Crash when parse big jsonfile #2042
How to check if a key exists without silently generating null objects on the path #2041
Crash when traversing over items() of temporary json objects #2040
How to parse multiple line value ? #2039
SAX API uses unsigned std::size_t but -1 if element size is not known; #2037
How to parse big decimal data #2036
how use template <typename T> struct adl_serializer #2035
auto iterator returned by find to handle value depending if is string or numeric. #2032
pass find returned iterator to numeric variable. #2031
Parse error on valid json file #2029
Is here any elegant way to combine serialization and deserialization code? #2028
Notes about dump function #2027
Different JSON printouts for empty dictionary on Linux and Mac. #2026
easier way to get exception reason out of json_sax_dom_callback_parser without exceptions #2024
Using fifo_map with base class and derived class #2023
Error reading JSON File #2022
Parse causing crash on android. Cannot catch. #2021
Extra backslashes in nested json #2020
How to create patch for merge_patch input ? #2018
CppUTest/include/CppUTestExt/MockSupport.h:40: error: default argument for ‘MockFailureReporter* failureReporterForThisCall’ has type ‘void*’ #2017
including another file #2016
GNU PREREQ Error with gcc 9.3.0 #2015
Parse error: json.exception.parse_error.101 - invalid string: ill-formed UTF-8 byte #2014
Add more flexibility to basic_json's ObjectType (and ArrayType) #2013
afl persistent mode #2012
Compiler Errors under VS2019 in Appveyor CI #2009
Another compilation failure with Visual Studio #2007
Implicit cast to std::string broken again with VS2019 16.5.0 #2006
error: no matching member function for call to 'AddRaw' #2005
When I re-create an object again after the network request, an error is reported #2003
How to merge (and not replace) different Json::Value objects in jsoncpp #2001
scalar transforms to list #2000
Dump JSON containing multibyte characters #1999
Build error when modify value #1998
How do i include a vector of pointers in my json? #1997
Compiler error wrt incomplete types changed in gcc8.3.0-26 #1996
NaN-like comparison behavior of discarded is inconvenient #1988
Maintaining JSON package in my CMake #1987
reading int number and string number #1986
Build error: keyword is hidden by macro definition! #1985
JSON patch diff for op=add formation is not as per standard (RFC 6902) #1983
json_pointer.contains() exception is incorrectly raised #1982
Error with non existing key #1981
Closed #1978
Where is the library built and what is the name? #1977
The cmake_import example does not build #1976
Dumping core when reading invalid file #1975
Abort in dump() method #1973
Unclear docs regarding parser_callback_t callbacks #1972
Possible memory leak on push_back #1971
Is it possible to get a safe mutable reference/pointer to internal variant used in nlohmann json? #1970
Getting a flatten json to map<string, string> #1957
forced type conversion or lexical cast without exception. #1955
Add json_view type support to avoid excessive copying #1954
Adding "examples" section for real-life usages #1953
Add nlohmann::json::key_type #1951
cannot use operator[] with a string argument with string #1949
std::ifstream >> json error #1948
Cannot update json data in an iterator? #1947
How can i build this library in VS 2017? #1943
json_pointer.contains() exceptions when path not found #1942
Nested objects serialize/deserialize #1941
Compile warning on architectures that are not x86 #1939
Version of nlohmann-json-dev in debian packages #1938
Create a json object for every cycle #1937
How to get the object name? #1936
Reserve and resize function for basic json #1935
How to use json parse in tsl::ordread_map? #1934
C++14 support is not enabled with msvc2015 #1932
Need help with to_json for derived class, keep getting "cannot use operator" #1931
How to handle std::vector<std::uint8_t> #1930
Heap corruption issue #1929
Add std::wistream support. #1928
This i can write and read any file thanks #1927
How can I get this simple example working? #1926
emplace_back does not seems to work with the int 0 #1925
Why nlohmann does not release memory #1924
Is it possible to have template json::parse with noexcept specifier? #1922
JSON to wstring? #1921
GCC 10 tests build failure #1920
Size of binary json representations #1919
Accessing strings (for example in keys or values) without having the lib create a copy of it. #1916
operator== documentation should show how to apply custom comparison function #1915
char8_t and std::u8string support #1914
std::is_pod is deprecated in C++20 #1913
Incomplete types reported by (experimental) GCC10 #1912
Compile warnings on MSVC 14.2 #1911
How to parse json file with type composition of std::optional and std::variant #1910
why root_schema be implemented as unique_ptr in json-validator.cpp，could I use it as shared_ptr? #1908
compile error in gcc-6.3.0 #1906
Scalar constexpr is odr-used when used as json initializer #1905
install Slack app #1904
typo in a comment #1903
Watch JSON variables in Debug #1902
does Json sdk cares about dfc dfd utf8 issue? #1901
Allow multiple line string value in JSON #1897
Writing map to json file #1896
Small documentation mistake #1895
why static function parse cann't find in visual studio 2019 #1894
Best way to handle json files with missing key value pairs. #1893
accessing json object as multimap #1892
What is the best way to parse vec3s into glm::vec3 #1891
Get array of items without using vector #1890
Build errors (clang 11.0.0) on macOS 10.15.2 #1889
Multiple arrays to vectors help #1888
json::parse(begin, end) parse error on first character using uchar* #1887
issue in free() #1886
is_number_unsigned() returns false for positive integers (int or 0 or 1 literals) #1885
MSVC build failure with /Zc:__cplusplus and C++17 #1883
RFC 6901 op:replace & arrays #1882
Problem with serialization of my custom template doubly-linked list #1881
is_array() is True, but raise 'cannot use operator[] for object iterators' #1880
Serialize dynamic array #1879
Serialization of struct object. #1877
warning:c4503 #1875
Why are flattened empty objects/arrays not representable? #1874
Container Overflow (ASAN) when using operator >> on an ifs #1873
Sub-array to vector or map object? #1870
WIP: QT (cute) type supports #1869
Compiler flags to disable features and shrink code size #1868
null strings #1867
Struct with array of struct and __attribute__((packed)) #1866
Best way to extract numbers in the string? #1865
Displaying \?\Volume{guid} from string to json giving error #1864
not working when compiling as x86 #1863
Skipping evaluation of log line expressions with a macro, is it possible? #1862
Suppress warnings #1861
conflit with g++ compile option -mwindows #1860
How to serialize nested classes to semi-flat JSON object? #1859
Memory Requirement for large json file #1858
Query a binary format (BSON, CBOR, MessagePack, UBJSON) #1856
Documentation on operator[] behavior with missing keys #1855
Problem in converting string into JSON; Can't parse successfully. #1854
json.at_or_default(key, defaultval) #1852
please improve the enum conversion documentation (my example gist provided) #1851
Default value returned on ValueType nlohmann::basic_json::value (const typename object_t::key_type& key, const ValueType& default_value) #1850
Accounting for arbitrary precision numerical literals #1849
While trying to make a simple array, I get a nested array instead #1848
How to reuse the parser and serializer intermediate storage? #1847
Too much content in json.hpp leads to slow compilation #1845
Cannot read some data in json file #1843
Precompiled JSON library? #1842
Please change assert into throw(maybe) in line 17946 #1841
JSON for modern C++ ECCN information #1840
CI: reduce build time for Travis valgrind #1836
How do I traverse a json object and add new elements into the hierarchy #1834
Invalid UTF-8 byte at index 1: 0x65 #1831
Serialize big data in json #1828
Backslash '\' in value causes exception #1827
from_json for non default constructible class with dependency injection #1819
Semi-frequent timeouts in test-unicode_all with 3.6.1 (aarch64) #1816
input_adapter not user extensible #1813
crash at json::destroy on android #1812
Logs are repeating while cmake #1809
Add a the possibility to add dynamic json objects #1795
Unnecessary test data file in the release #1790
Add support for parse stack limiting #1788
GCC -Wuseless-cast warnings #1777
compilation issue with NVCC 9.0 #1773
Unexpected behavior with fifo_map json when copy and append #1763
Parse error #1761
Assignment (using value()) to nonexistent element behaves differently on Xcode 8 vs Xcode 10 #1758
Readme out of date #1756
cmake_* tests don't use the build system's compiler #1747
Static assertions for template type properties required #1729
Use float and possibly half in json::to_cbor #1719
json::from_cbor does not respect allow_exceptions = false when input is string literal #1715
/Zc:__cplusplus leads to C2416 #1695
unflatten vs objects with number-ish keys #1575
A "thinner" source code tar as part of release? #1572
Repository is almost 450MB #1497
Substantial performance penalty caused by polymorphic input adapter #1457
Move tests to a separate repo #1235
reduce repos size #1185
CMakeLists.txt in release zips? #1184
Minimal branch? #1066
Move test blobs to a submodule? #732
[Question] When using this as git submodule, will it clone the whole thing include test data and benchmark? #620
Need to improve ignores.. #567
Minimal repository (current size very large) #556
For a header-only library you have to clone 214MB #482
17 MB / 90 MB repo size!? #96
Improve parse_ubjson_fuzzer #2182 (tanuj208)
Add input adapter tests #2178 (nlohmann)
Fix warnings #2174 (nlohmann)
Fix PR#1006 #2158 (dota17)
Fix issue#1972 #2153 (dota17)
Update URLs to HTTPS #2152 (TotalCaesar659)
Fix Issue#1813: user defined input adapters #2145 (FrancoisChabot)
Fix issue#1939: Cast character to unsigned for comparison #2144 (XyFreak)
Fix issue#2142: readme: fix typo in CMake FetchContent example #2143 (quentin-dev)
Respect allow_exceptions=false for binary formats #2140 (nlohmann)
Fix issue 2112 #2137 (dota17)
Add bleeding edge GCC to CI #2136 (aokellermann)
Clean up implementation of binary type #2125 (nlohmann)
Fixed a compilation error in MSVC #2121 (gistrec)
Overwork CI #2119 (nlohmann)
Fix warnings from Clang 10 and GCC 9 #2116 (nlohmann)
Do not include <ciso646> when using C++17 #2115 (nlohmann)
Fix issue#2086: disallow json::value_t type parameter in value() #2104 (dota17)
Fix Coveralls integration #2100 (nlohmann)
Add tests for binary values #2099 (nlohmann)
Use external test data #2081 (nlohmann)
Remove Doozer CI #2080 (nlohmann)
Fix README.md. Missing ``` #2077 (ArthurSonzogni)
Fix error message about invalid surrogate pairs #2076 (rmisev)
Add CMake fetchcontent documentation and tests #2074 (ArthurSonzogni)
Properly pass serialize_binary to dump function #2071 (nlohmann)
Fix returning reference to local temporary object #2069 (nlohmann)
updated wandbox link #2060 (alexandermyasnikov)
Fix bug in diff function #2054 (nlohmann)
Fix GCC compiler warnings #2053 (nlohmann)
Fix Clang compiler warnings #2051 (nlohmann)
Update doctest to 2.3.7 #2050 (nlohmann)
Fix issue#1719 #2044 (dota17)
Add missing testcase about NaN in unit-constructor1.cpp #2043 (dota17)
Templatize basic_json constructor from json_ref #2034 (ArtemSarmini)
Replace deprecated std::is_pod #2033 (nlohmann)
Fixes #1971 (memory leak in basic_json::push_back) #2025 (ArtemSarmini)
fix #1982:json_pointer.contains() exception is incorrectly raised #2019 (dota17)
Update LICENSE.MIT #2010 (magamig)
PR for #2006 to test in AppVeyor. #2008 (garethsb)
Added wsjcpp.yml #2004 (sea-kg)
fix error 'setw' is not a member of 'std' in Wandbox example #2002 (alexandermyasnikov)
catch exceptions for json_pointer : ..../+99 #1990 (dota17)
Modify the document about operator== #1984 (dota17)
Rename argument array_index to array_indx in json_pointer methods #1980 (linev)
README: Fix string representation of dumped json #1979 (alexweej)
fix warnings in serializer.hpp for VS2019 #1969 (dota17)
Fix C26451 warnnings in to_chars.hpp #1967 (dota17)
appveyor.yml: Compile and test with latest version for __cplusplus ma… #1958 (t-b)
Fix typo in examples #1956 (dota17)
templated input adapters #1950 (FrancoisChabot)
Update README.md : add a FAQ about memory release #1933 (dota17)
Some typos #1923 (Coeur)
Fix link to parse function in README #1918 (kastiglione)
Readme: Updated links to hunter repo & docs #1917 (jothepro)
Adds instruction for using Build2's package manager #1909 (Klaim)
Update README.md #1907 (pauljurczak)
Fix warning: ignoring return value #1871 (sonulohani)
docs: add central repository as conan source to readme #1857 (gocarlos)
README: Package in MSYS2 renamed to nlohmann-json #1853 (podsvirov)
Fix msvc warnings #1846 (MBalszun)
Update tests that generate CMake projects to use main project's C++ compiler #1844 (Tridacnid)
make CMake's version config file architecture-independent #1746 (uhoreg)
Add binary type support to all binary file formats, as well as an internally represented binary type #1662 (OmnipotentEntity)

v3.7.3 (2019-11-17)

Full Changelog

Project branches #1839
Quadratic destruction complexity introduced in #1436 #1837
Trying to open a file #1814
Comparing data type with value_t::number_integer fails #1783
CMake version config file is architecture-dependent #1697
Fix quadratic destruction complexity #1838 (nickaein)

v3.7.2 (2019-11-10)

Full Changelog

Segmentation fault in destructor in case of large inputs #1835
type_name() is not consistent with type() #1833
json::parse is not a member #1832
How do you deal with json* ? #1829
Combined find_package/add_subdirectory not linking libraries #1771
example code for ifstream reading a json file results in no operator error #1766
Warning: unsequenced modification and access to 'range' #1674
Segmentation fault (stack overflow) due to unbounded recursion #1419
Stack-overflow (OSS-Fuzz 4234) #832
Configure WhiteSource Bolt for GitHub #1830 (mend-bolt-for-github[bot])
Prevent stackoverflow caused by recursive deconstruction #1436 (nickaein)

v3.7.1 (2019-11-06)

Full Changelog

std::is_constructible is always true with tuple #1825
Can't compile from_json(std::valarray<T>). #1824
json class should have a get_or member function #1823
NLOHMANN_JSON_SERIALIZE_ENUM macro capture's json objects by value #1822
Parse fails when number literals start with zero #1820
Weird behaviour of contains with json_pointer #1815
strange behaviour with json_pointer and .contains() #1811
Can #1695 be re-opened? #1808
Merge two json objects #1807
std::is_constructible<json, std::unordered_map<std::string, Data>> when to_json not defined #1805
Private data on parsing #1802
Capturing Line and Position when querying #1800
json error on parsing DBL_MAX from string #1796
De/Serialisation of vector of tupple object with nested obect need Help please #1794
Output json is corrupted #1793
variable name byte sometimes used as a #define #1792
Can't read json file #1791
Problems with special German letters #1789
Support for trailing commas #1787
json_pointer construction bug #1786
Visual Studio 2017 warning #1784
ciso646 header become obsolete #1782
Migrate LGTM.com installation from OAuth to GitHub App #1781
JSON comparison, contains and operator& #1778
pass a json object to a class contructor adds an array around the object #1776
'Float' number_float_function_t template parameter name conflicts with C '#define Float float' #1775
A weird building problem :-( #1774
What is this json_ref? #1772
Interoperability with other languages #1770
Json dump #1768
json_pointer<>::back() should be const #1764
How to get value from array #1762
Merge two jsons #1757
Unable to locate nlohmann_jsonConfig.cmake #1755
json.hpp won;t compile VS2019 CLR/CLI app but does in console app #1754
[Nested Json Objects] Segmentation fault #1753
remove/replace assert with exceptions #1752
Add array support for update() function #1751
Is there a reason the get_to method is defined in include/nlohmann/json.hpp but not in single_include/nlohmann/json.hpp? #1750
how to validate json object before calling dump() #1748
Unable to invoke accessors on json objects in lldb #1745
Escaping string before parsing #1743
Construction in a member initializer list using curly braces is set as 'array' #1742
Read a subkey from json object #1740
Serialize vector of glm:vec2 #1739
Support nlohmann::basic_json::value with JSON_NOEXCEPTION #1738
how to know the parse is error #1737
How to check if a given key exists in a JSON object #1736
Allow The Colon Key-Value Delimiter To Have A Space Before It [@ READ ONLY] #1735
Allow Tail { "Key": "Value" } Comma [@ READ ONLY] #1734
No-throw json::value() #1733
JsonObject.dump() #1732
basic_json has no member "parse" #1731
Exception "type must be string, but is array" #1730
json::contains usage to find a path #1727
How to create JSON Object from my Structures of Data and Json File from that Object #1726
please provide an API to read JSON from file directly. #1725
How to modify a value stored at a key? #1723
CMake not correctly finding the configuration package for 3.7.0 #1721
name typo in the "spack package management" section of README.md #1720
How to add json to another json? #1718
json::parse() ubsan regression with v3.7.0 #1716
What I am doing wrong?!? #1714
Potential memory leak detected by Valgrind #1713
json::parse is not thread safe? #1712
static analysis alarm by cppcheck #1711
The compilation time is slow #1710
not linking properly with cmake #1709
Error in dump() with int64_t minimum value #1708
Crash on trying to deserialize json string on 3ds homebrew #1707
Can't compile VS2019. 13 Errors #1706
find an object that matches the search criteria #1705
IntelliSense goes crazy on VS2019 #1704
Installing on Ubuntu 16.04 #1703
Where is json::parse now? #1702
Forward header should't be amalgamated #1700
Json support for Cmake version 2.8.12 #1699
Intruisive scientific notation when using .dump(); #1698
Is there support for automatic serialization/deserialization? #1696
on MSVC dump() will hard crash for larger json #1693
puzzled implicit conversions #1692
Information: My project uses this awesome library #1691
Consider listing files explicitly instead of using GLOB #1686
Failing tests on MSVC with VS2019 15.9.13 x64 #1685
Change from v2 to v3. Encoding with cp1252 #1680
How to add Fifo_map into json using Cmake #1679
include.zip should contain meson.build #1672
[Question] How do I parse JSON into custom types? #1669
Binary (0x05) data type for BSON to JSON conversion #1668
Possible to call dump from lldb? #1666
Segmentation fault when linked with libunwind #1665
Should I include single-header after my to_json and from_json custom functions declaration? Why not? #1663
Errors/Warnings in VS 2019 when Including Header File #1659
Return null object from object's const operator[] as well. #1658
Can't stream json object in to std::basic_stringstream<wchar_t> #1656
C2440 in vs2015 cannot convert from 'initializer-list' to nlohmann::basic_json #1655
Issues around get and pointers #1653
Non-member operator== breaks enum (de)serialization #1647
Valgrind: bytes in 1 blocks are definitely lost #1646
Convenient way to make 'basic_json' accept 'QString' as an key type as well? #1640
mongodb: nan, inf #1599
Error in adl_serializer #1590
Injecting class during serialization #1584
output_adapter not user extensible #1534
Inclusion of nlohmann/json.hpp causes OS/ABI to change on Linux #1410
Add library versioning using inline namespaces #1394
CBOR byte string support #1129
How to deserialize array with derived objects #716
Add restriction for tuple specialization of to_json #1826 (cbegue)
Fix for #1647 #1821 (AnthonyVH)
Fix issue #1805 #1806 (cbegue)
Fix some spelling errors - mostly in comments & documentation. #1803 (flopp)
Update Hedley to v11. #1799 (nemequ)
iteration_proxy: Fix integer truncation from std::size_t to int #1797 (t-b)
appveyor.yml: Add MSVC 16 2019 support #1780 (t-b)
test/CMakeLists.txt: Use an explicit list instead of GLOB #1779 (t-b)
Make json_pointer::back const (resolves #1764) #1769 (chris0x44)
did you mean 'serialization'? #1767 (0xflotus)
Allow items() to be used with custom string #1765 (crazyjul)
Cppcheck fixes #1760 (Xav83)
Fix and add test's for SFINAE problem #1741 (tete17)
Fix clang sanitizer invocation #1728 (t-b)
Add gcc 9 and compile with experimental C++20 support #1724 (t-b)
Fix int64 min issue #1722 (t-b)
release: add singleinclude and meson.build to include.zip #1694 (eli-schwartz)

v3.7.0 (2019-07-28)

Full Changelog

How can I retrieve uknown strings from json file in my C++ program. #1684
contains() is sometimes causing stack-based buffer overrun exceptions #1683
How to deserialize arrays from json #1681
Compilation failed in VS2015 #1678
Why the compiled object file is so huge? #1677
From Version 2.1.1 to 3.6.1 serialize std::set #1676
Qt deprecation model halting compiltion #1675
Build For Raspberry pi , Rapbery with new Compiler C++17 #1671
Build from Raspberry pi #1667
Can not translate map with integer key to dict string ? #1664
Double type converts to scientific notation #1661
Missing v3.6.1 tag on master branch #1657
Support Fleese Binary Data Format #1654
Suggestion: replace alternative tokens for !, && and || with their symbols #1652
Build failure test-allocator.vcxproj #1651
How to provide function json& to_json() which is similar as 'void to_json(json&j, const CObject& obj)' ? #1650
Can't throw exception when starting file is a number #1649
to_json / from_json with nested type #1648
How to create a json object from a std::string, created by j.dump? #1645
Problem getting vector (array) of strings #1644
json.hpp compilation issue with other typedefs with same name #1642
nlohmann::adl_serializer<T,void>::to_json no matching overloaded function found #1641
overwrite adl_serializer<bool, void> to change behaviour #1638
json.SelectToken("Manufacturers.Products.Price"); #1637
Add json type as value #1636
Unit conversion test error: conversion from 'nlohmann::json' to non-scalar type 'std::string_view' requested #1634
nlohmann VS JsonCpp by C++17 #1633
To integrate an inline helper function that return type name as string #1632
Return JSON as reference #1631
Updating from an older version causes problems with assing a json object to a struct #1630
Can without default constructor function for user defined classes when only to_json is needed? #1629
Compilation fails with clang 6.x-8.x in C++14 mode #1628
Treating floating point as string #1627
error parsing character å #1626
[Help] How to Improve Json Output Performance with Large Json Arrays #1624
Suggested link changes for reporting new issues [blob/develop/REAME.md and blob/develop/.github/CONTRIBUTING.md] #1623
Broken link to issue template in CONTRIBUTING.md #1622
Missing word in README.md file #1621
Package manager instructions in README for brew is incorrect #1620
Building with Visual Studio 2019 #1619
Precedence of to_json and builtin harmful #1617
The type json is missing from the html documentation #1616
variant is not support in Release 3.6.1? #1615
Replace assert with throw for const operator[] #1614
Memory Overhead is Too High (10x or more) #1613
program crash everytime, when other data type incomming in json stream as expected #1612
Improved Enum Support #1611
is it possible convert json object back to stl container ? #1610
Add C++17-like emplace.back() for arrays. #1609
is_nothrow_copy_constructible fails for json::const_iterator on MSVC2015 x86 Debug build #1608
Reading and writing array elements #1607
Converting json::value to int #1605
I have a vector of keys and and a string of value and i want to create nested json array #1604
In compatible JSON object from nlohmann::json to nohman::json - unexpected end of input; expected '[', '{', or a literal #1603
json parser crash if having a large number integer in message #1602
Value method with undocumented throwing 302 exception #1601
Accessing value with json pointer adds key if not existing #1600
README.md broken link to project documentation #1597
Random Kudos: Thanks for your work on this! #1596
json::parse return value and errors #1595
initializer list constructor makes curly brace initialization fragile #1594
trying to log message for missing keyword, difference between ["foo"] and at("foo") #1593
std::string and std::wstring to_json #1592
I have a C structure which I need to convert to a JSON. How do I do it? Haven't found proper examples so far. #1591
dump_escaped possible error ? #1589
json::parse() into a vector<string> results in unhandled exception #1587
push_back()/emplace_back() on array invalidates pointers to existing array items #1586
Getting nlohmann::detail::parse_error on JSON generated by nlohmann::json not sure why #1583
getting error terminate called after throwing an instance of 'std::domain_error' what(): cannot use at() with string #1582
how i create json file #1581
prevent rounding of double datatype values #1580
Documentation Container Overview Doesn't Reference Const Methods #1579
Writing an array into a nlohmann::json object #1578
compilation error when using with another library #1577
Homebrew on OSX doesn't install cmake config file #1576
JSON Parse Out of Range Error #1574
Integrating into existing CMake Project #1573
conversion to std::string failed #1571
jPtr operation does not throw #1569
How to generate dll file for this project #1568
how to pass variable data to json in c #1567
I want to achieve an upgraded function. #1566
How to determine the type of elements read from a JSON array? #1564
try_get_to #1563
example code compile error #1562
How to iterate over nested json object #1561
Build Option/Separate Function to Allow to Throw on Duplicate Keys #1560
Compiler Switches -Weffc++ & -Wshadow are throwing errors #1558
warning: use of the 'nodiscard' attribute is a C++17 extension #1557
Import/Export compressed JSON files #1556
GDB renderers for json library #1554
Is it possible to construct a json string object from a binary buffer? #1553
json objects in list #1552
Matrix output #1550
Using json merge_patch on ordered non-alphanumeric datasets #1549
Invalid parsed value for big integer #1548
Integrating with android ndk issues. #1547
add noexcept json::value("key", default) method variant? #1546
Thank you! 🙌 #1545
Output and input matrix #1544
Add regression tests for MSVC #1543
[Help Needed!] Season of Docs #1542
program still abort() or exit() with try catch #1541
Have a json::type_error exception because of JSON object #1540
Quoted numbers #1538
Reading a JSON file into an object #1537
Releases 3.6.0 and 3.6.1 don't build on conda / windows #1536
[Clang] warning: use of the 'nodiscard' attribute is a C++17 extension [-Wc++17-extensions] #1535
wchar_t/std::wstring json can be created but not accessed #1533
json stringify #1532
How can I use it from gcc on RPI #1528
std::pair treated as an array instead of key-value in std::vector<std::pair<>> #1520
Excessive Memory Usage for Large Json File #1516
SAX dumper #1512
Conversion to user type containing a std::vector not working with documented approach #1511
Inconsistent use of type alias. #1507
Is there a current way to represent strings as json int? #1503
Intermittent issues with loadJSON #1484
use json construct std::string #1462
JSON Creation #1461
Null bytes in files are treated like EOF #1095
Feature: to_string(const json& j); #916
Use GNUInstallDirs instead of hard-coded path. #1673 (ghost)
Package Manager: MSYS2 (pacman) #1670 (podsvirov)
Fix json.hpp compilation issue with other typedefs with same name (Issue #1642) #1643 (kevinlul)
Add explicit conversion from json to std::string_view in conversion unit test #1639 (taylorhoward92)
Minor fixes in docs #1625 (nickaein)
Fix broken links to documentation #1598 (nickaein)
Added to_string and added basic tests #1585 (Macr0Nerd)
Regression tests for MSVC #1570 (nickaein)
Fix/1511 #1555 (theodelrieu)
Remove C++17 extension warning from clang; #1535 #1551 (heavywatal)
moved from Catch to doctest for unit tests #1439 (onqtam)

v3.6.1 (2019-03-20)

Full Changelog

3.6.1 (2019-03-20)

Full Changelog

Failed to build with <Windows.h> #1531
Compiling 3.6.0 with GCC > 7, array vs std::array #590 is back #1530
3.6.0: warning: missing initializer for member 'std::array<char, 9ul>::_M_elems' [-Wmissing-field-initializers] #1527
unable to parse json #1525

v3.6.0 (2019-03-19)

Full Changelog

How can I turn a string of a json array into a json array? #1526
Minor: missing a std:: namespace tag #1521
how to precision to four decimal for double when use to_json #1519
error parse #1518
Compile error: template argument deduction/substitution failed #1515
std::complex type #1510
CBOR byte string support #1509
Compilation error getting a std::pair<> on latest VS 2017 compiler #1506
"Integration" section of documentation needs update? #1505
Json object from string from a TCP socket #1504
MSVC warning C4946 ("reinterpret_cast used between related classes") compiling json.hpp #1502
How to programmatically fill an n-th dimensional JSON object? #1501
Error compiling with clang and JSON_NOEXCEPTION: need to include cstdlib #1500
The code compiles unsuccessfully with android-ndk-r10e #1499
Cmake 3.1 in develop, when is it likely to make it into a stable release? #1498
Some Help please object inside array #1494
How to get data into vector of user-defined type from a Json object #1493
how to find subelement without loop #1490
json to std::map #1487
Type in README.md #1486
Error in parsing and reading msgpack-lite #1485
Compiling issues with libc 2.12 #1483
How do I use reference or pointer binding values? #1482
Compilation fails in MSVC with the Microsoft Language Extensions disabled #1481
Functional visit #1480
[Question] Unescaped dump #1479
Some Help please #1478
Global variables are stored within the JSON file, how do I declare them as global variables when I read them out in my C++ program? #1476
Unable to modify one of the values within the JSON file, and save it #1475
Documentation of parse function has two identical @pre causes #1473
GCC 9.0 build failure #1472
Can we have an exists() method? #1471
How to parse multi object json from file? #1470
How to returns the name of the upper object? #1467
Error: "tuple_size" has already been declared in the current scope #1466
Checking keys of two jsons against eachother #1465
Disable installation when used as meson subproject #1463
Unpack list of integers to a std::vector<int> #1460
Implement DRY definition of JSON representation of a c++ class #1459
json.exception.type_error.305 with GCC 4.9 when using C++ {} initializer #1458
API to convert an "uninitialized" json into an empty object or empty array #1456
How to parse a vector of objects with const attributes #1453
NLOHMANN_JSON_SERIALIZE_ENUM potentially requires duplicate definitions #1450
Question about making json object from file directory #1449
.get() throws error if used with userdefined structs in unordered_map #1448
Integer Overflow (OSS-Fuzz 12506) #1447
If a string has too many invalid UTF-8 characters, json::dump attempts to index an array out of bounds. #1445
Setting values of .JSON file #1444
alias object_t::key_type in basic_json #1442
Latest Ubuntu package is 2.1.1 #1438
lexer.hpp(1363) '_snprintf': is not a member | Visualstudio 2017 #1437
Static method invites inadvertent logic error. #1433
EOS compilation produces "fatal error: 'nlohmann/json.hpp' file not found" #1432
Support for bad commas #1429
Please have one base exception class for all json exceptions #1427
Compilation warning: 'tuple_size' defined as a class template here but previously declared as a struct template #1426
Which version can be used with GCC 4.8.2 ? #1424
Ignore nullptr values on constructing json object from a container #1422
Support for custom float precision via unquoted strings #1421
It is possible to call json::find with a json_pointer as argument. This causes runtime UB/crash. #1418
Dump throwing exception #1416
Build error #1415
Append version to include.zip #1412
error C2039: '_snprintf': is not a member of 'std' - Windows #1408
Deserializing to vector #1407
Efficient way to set a json object as value into another json key #1406
Document return value of parse() when allow_exceptions == false and parsing fails #1405
Unexpected behaviour with structured binding #1404
Which native types does get<type>() allow? #1403
Add something like Json::StaticString #1402
-Wmismatched-tags in 3.5.0? #1401
Coverity Scan reports an UNCAUGHT_EXCEPT issue #1400
fff #1399
sorry this is not an issue, just a Question, How to change a key value in a file and save it ? #1398
appveyor x64 builds appear to be using Win32 toolset #1374
Serializing/Deserializing a Class containing a vector of itself #1373
Retrieving array elements. #1369
Deserialize #1366
call of overloaded for push_back and operator+= is ambiguous #1352
got an error and cann't figure it out #1351
Improve number-to-string conversion #1334
Implicit type conversion error on MSVC #1333
NuGet Package #1132
Change macros to numeric_limits #1514 (naszta)
fix GCC 7.1.1 - 7.2.1 on CentOS #1496 (lieff)
Update Buckaroo instructions in README.md #1495 (njlr)
Fix gcc9 build error test/src/unit-allocator.cpp (Issue #1472) #1492 (stac47)
Fix typo in README.md #1491 (nickaein)
Do proper endian conversions #1489 (andreas-schwab)
Fix documentation #1477 (nickaein)
Implement contains() member function #1474 (nickaein)
Add operator/= and operator/ to construct a JSON pointer by appending two JSON pointers #1469 (garethsb)
Disable Clang -Wmismatched-tags warning on tuple_size / tuple_element #1468 (past-due)
Disable installation when used as meson subproject. #1463 #1464 (elvisoric)
docs: README typo #1455 (wythe)
remove extra semicolon from readme #1451 (Afforix)
attempt to fix #1445, flush buffer in serializer::dump_escaped in UTF8_REJECT case. #1446 (scinart)
Use C++11 features supported by CMake 3.1. #1441 (iwanders)
:rotating_light: fixed unused variable warning #1435 (pboettch)
allow push_back() and pop_back() calls on json_pointer #1434 (pboettch)
Add instructions about using nlohmann/json with the conda package manager #1430 (nicoddemus)
Updated year in README.md #1425 (jef)
Fixed broken links in the README file #1423 (skypjack)
Fixed broken links in the README file #1420 (skypjack)
docs: typo in README #1417 (wythe)
Fix x64 target platform for appveyor #1414 (nickaein)
Improve dump_integer performance #1411 (nickaein)
buildsystem: relax requirement on cmake version #1409 (yann-morin-1998)
CMake: Optional Install if Embedded #1330 (ax3l)

v3.5.0 (2018-12-21)

Full Changelog

Copyconstructor inserts original into array with single element #1397
Get value without explicit typecasting #1395
Big file parsing #1393
Adding Structured Binding Support #1388
map<json::value_t, string> exhibits unexpected behavior #1387
Error Code Return #1386
using unordered_map as object type #1385
float precision #1384
[json.exception.type_error.316] invalid UTF-8 byte at index 1: 0xC3 #1383
Inconsistent Constructor (GCC vs. Clang) #1381
#define or || #1379
How to iterate inside the values ? #1377
items() unable to get the elements #1375
conversion json to std::map doesn't work for types <int, double> #1372
A minor issue in the build instructions #1371
Using this library without stream ? #1370
Writing and reading BSON data #1368
Retrieving array elements from object type iterator. #1367
json::dump() silently crashes if items contain accented letters #1365
warnings in MSVC (2015) in 3.4.0 related to bool... #1364
Cant compile with -C++17 and beyond compiler options #1362
json to concrete type conversion through reference or pointer fails #1361
the first attributes of JSON string is misplaced #1360
Copy-construct using initializer-list converts objects to arrays #1359
About value(key, default_value) and operator[](key) #1358
Problem with printing json response object #1356
Serializing pointer segfaults #1355
Read long long int data as a number. #1354
eclipse oxygen in ubuntu get<size_t> is ambiguous #1353
Can't build on Visual Studio 2017 v15.8.9 #1350
cannot parse from string? #1349
Error: out_of_range #1348
expansion pattern 'CompatibleObjectType' contains no argument packs, with CUDA 10 #1347
Unable to update a value for a nested(multi-level) json file #1344
Fails to compile when std::iterator_traits is not SFINAE friendly. #1341
EOF flag not set on exhausted input streams. #1340
Shadowed Member in merge_patch #1339
Periods/literal dots in keys? #1338
Protect macro expansion of commonly defined macros #1337
How to validate an input before parsing? #1336
Non-verifying dump() alternative for debugging/logging needed #1335
Json Libarary is not responding for me in c++ #1332
Question - how to find an object in an array #1331
Nesting additional data in json object #1328
can to_json() be defined inside a class? #1324
CodeBlocks IDE can't find json.hpp header #1318
Change json_pointer to provide an iterator begin/end/etc, don't use vectors, and also enable string_view #1312
Xcode - adding it to library #1300
unicode: accept char16_t, char32_t sequences #1298
unicode: char16_t* is compiler error, but char16_t[] is accepted #1297
Dockerfile Project Help Needed #1296
Comparisons between large unsigned and negative signed integers #1295
CMake alias to nlohmann::json #1291
Release zips without tests #1285
separate object_t::key_type from basic_json::key_type, and use an allocator which returns object_t::key_type #1274
Is there a nice way to associate external values with json elements? #1256
Delete by json_pointer #1248
Expose lexer, as a StAX parser #1219
Subclassing json() & error on recursive load #1201
Check value for existence by json_pointer #1194
Feature/add file input adapter #1392 (dumarjo)
Added Support for Structured Bindings #1391 (pratikpc)
Link to issue #958 broken #1382 (kjpus)
readme: fix typo #1380 (manu-chroma)
recommend using explicit from JSON conversions #1363 (theodelrieu)
Fix merge_patch shadow warning #1346 (ax3l)
Allow installation via Meson #1345 (mpoquet)
Set eofbit on exhausted input stream. #1343 (mefyl)
Add a SFINAE friendly iterator_traits and use that instead. #1342 (dgavedissian)
Fix EOL Whitespaces & CMake Spelling #1329 (ax3l)

v3.4.0 (2018-10-30)

Full Changelog

Big uint64_t values are serialized wrong #1327
[Question] Efficient check for equivalency? #1325
Can't use ifstream and .clear() #1321
[Warning] -Wparentheses on line 555 on single_include #1319
Compilation error using at and find with enum struct #1316
Parsing JSON from a web address #1311
How to convert JSON to Struct with embeded subject #1310
Null safety/coalescing function? #1309
Building fails using single include file: json.hpp #1308
json::parse(std::string) Exception inside packaged Lib #1306
Problem in Dockerfile with installation of library #1304
compile error in from_json converting to container with std::pair #1299
Json that I am trying to parse, and I am lost Structure Array below top level #1293
Serializing std::variant causes stack overflow #1292
How do I go about customising from_json to support __int128_t/__uint128_t? #1290
merge_patch: inconsistent behaviour merging empty sub-object #1289
Buffer over/underrun using UBJson? #1288
Enable the latest C++ standard with Visual Studio #1287
truncation of constant value in to_cbor() #1286
eosio.wasmsdk error #1284
use the same interface for writing arrays and non-arrays #1283
How to read json file with optional entries and entries with different types #1281
merge result not as espected #1279
how to get only "name" from below json #1278
syntax error on right json string #1276
Parsing JSON Array where members have no key, using custom types #1267
I get a json exception periodically from json::parse for the same json #1263
GCC 8.2.1. Compilation error: invalid conversion from... #1246
BSON support #1244
enum to json mapping #1208
Soften the landing when dumping non-UTF8 strings (type_error.316 exception) #1198
Add macro to define enum/JSON mapping #1323 (nlohmann)
Add BSON support #1320 (nlohmann)
Properly convert constants to CharType #1315 (nlohmann)
Allow to set error handler for decoding errors #1314 (nlohmann)
Add Meson related info to README #1305 (koponomarenko)
Improve diagnostic messages for binary formats #1303 (nlohmann)
add new is_constructible_* traits used in from_json #1301 (theodelrieu)
add constraints for variadic json_ref constructors #1294 (theodelrieu)
Improve diagnostic messages #1282 (nlohmann)
Removed linter warnings #1280 (nlohmann)
Thirdparty benchmark: Fix Clang detection. #1277 (Lord-Kamina)

v3.3.0 (2018-10-05)

Full Changelog

3.3.0 (2018-10-05)

Full Changelog

When key is not found print the key name into error too #1273
Visual Studio 2017 15.8.5 "conditional expression is constant" warning on Line 1851 in json.hpp #1268
how can we get this working on WSL? #1264
Help needed #1259
A way to get to a JSON values "key" #1258
While compiling got 76 errors #1255
Two blackslashes on json output file #1253
Including nlohmann the badwrong way. #1250
how to build with clang? #1247
Cmake target_link_libraries unable to find nlohmann_json since version 3.2.0 #1243
[Question] Access to end() iterator reference #1242
Parsing different json format #1241
Parsing Multiple JSON Files #1240
Doesn't compile under C++17 #1239
Conversion operator for nlohmann::json is not SFINAE friendly #1237
Custom deserialization of number_float_t #1236
deprecated-declarations warnings when compiling tests with GCC 8.2.1. #1233
Incomplete type with json_fwd.hpp #1232
Parse Error #1229
json::get function with argument #1227
questions regarding from_json #1226
Lambda in unevaluated context #1225
NLohmann doesn't compile when enabling strict warning policies #1224
Creating array of objects #1223
Somewhat unhelpful error message "cannot use operator[] with object" #1220
single_include json.hpp #1218
Maps with enum class keys which are convertible to JSON strings should be converted to JSON dictionaries #1217
Adding JSON Array to the Array #1216
Best way to output a vector of a given type to json #1215
compiler warning: double definition of macro JSON_INTERNAL_CATCH #1213
Compilation error when using MOCK_METHOD1 from GMock and nlohmann::json #1212
Issues parsing a previously encoded binary (non-UTF8) string. #1211
Yet another ordering question: char * and parse() #1209
Error using gcc 8.1.0 on Ubuntu 14.04 #1207
"type must be string, but is " std::string(j.type_name() #1206
Returning empty json object from a function of type const json& ? #1205
VS2017 compiler suggests using constexpr if #1204
Template instatiation error on compiling #1203
BUG - json dump field with unicode -> array of ints (instead of string) #1197
Compile error using Code::Blocks // mingw-w64 GCC 8.1.0 - "Incomplete Type" #1193
SEGFAULT on arm target #1190
Compiler crash with old Clang #1179
Custom Precision on floating point numbers #1170
Can we have a json_view class like std::string_view? #1158
improve error handling #1152
We should remove static_asserts #960
Fix warning C4127: conditional expression is constant #1272 (antonioborondo)
Turn off additional deprecation warnings for GCC. #1271 (chuckatkins)
docs: Add additional CMake documentation #1270 (chuckatkins)
unit-testsuites.cpp: fix hangup if file not found #1262 (knilch0r)
Fix broken cmake imported target alias #1260 (chuckatkins)
GCC 48 #1257 (henryiii)
Add version and license to meson.build #1252 (koponomarenko)
#1179 Reordered the code. It seems to stop clang 3.4.2 in RHEL 7 from crash… #1249 (LEgregius)
Use a version check to provide backwards comatible CMake imported target names #1245 (chuckatkins)
Fix issue #1237 #1238 (theodelrieu)
Add a get overload taking a parameter. #1231 (theodelrieu)
Move lambda out of unevaluated context #1230 (mandreyel)
Remove static asserts #1228 (theodelrieu)
Better error 305 #1221 (rivertam)
Fix #1213 #1214 (simnalamburt)
Export package to allow builds without installing #1202 (dennisfischer)

v3.2.0 (2018-08-20)

Full Changelog

3.2.0 (2018-08-20)

Full Changelog

Am I doing this wrong? Getting an empty string #1199
Incompatible Pointer Type #1196
json.exception.type_error.316 #1195
Strange warnings in Code::Blocks 17.12, GNU GCC #1192
[Question] Current place in code to change floating point resolution #1191
Add key name when throwing type error #1189
Not able to include in visual studio code? #1188
Get an Index or row number of an element #1186
Difference between merge_patch and update #1183
Is there a way to get an element from a JSON without throwing an exception on failure? #1182
to_string? #1181
How to cache a json object's pointer into a map? #1180
Can this library work within a Qt project for Android using Qt Creator? #1178
How to get all keys of one object? #1177
How can I only parse the first level and get the value as string? #1175
I have a query regarding nlohmann::basic_json::basic_json #1174
unordered_map with vectors won't convert to json? #1173
return json objects from functions #1172
Problem when exporting to CBOR #1171
Roundtripping null to nullptr does not work #1169
MSVC fails to compile std::swap specialization for nlohmann::json #1168
Unexpected behaviour of is_null - Part II #1167
Floating point imprecision #1166
Combine json objects into one? #1165
Is there any way to know if the object has changed? #1164
Value throws on null string #1163
Weird template issue in large project #1162
_json returns a different result vs ::parse #1161
Showing difference between two json objects #1160
no instance of overloaded function "std::swap" matches the specified type #1159
resize(...)? #1157
Issue with struct nested in class' to_json #1155
Deserialize std::map with std::nan #1154
Parse throwing errors #1149
cocoapod integration #1148
wstring parsing #1147
Is it possible to dump a two-dimensional array to "[[null],[1,2,3]]"? #1146
Want to write a class member variable and a struct variable ( this structure is inside the class) to the json file #1145
Does json support converting an instance of a struct into json string? #1143
#Most efficient way to search for child parameters (recursive find?) #1141
could not find to_json() method in T's namespace #1140
chars get treated as JSON numbers not JSON strings #1139
How do I count number of objects in array? #1137
Serializing a vector of classes? #1136
Compile error. Unable convert form nullptr to nullptr&& #1135
std::unordered_map in struct, serialization #1133
dump() can't handle umlauts #1131
Add a way to get a key reference from the iterator #1127
can't not parse "\“ string #1123
if json file contain Internationalization chars , get exception #1122
How to use a json::iterator dereferenced value in code? #1120
Disable implicit conversions from json to std::initializer_list<T> for any T #1118
Implicit conversions to complex types can lead to surprising and confusing errors #1116
How can I write from_json for a complex datatype that is not default constructible? #1115
Compile error in VS2015 when compiling unit-conversions.cpp #1114
ADL Serializer for std::any / boost::any #1113
Unexpected behaviour of is_null #1112
How to resolve " undefined reference to `std::__throw_bad_cast()'" #1111
cannot compile on ubuntu 18.04 and 16.04 #1110
JSON representation for floating point values has too many digits #1109
Not working for classes containing "_declspec(dllimport)" in their declaration #1108
Get keys from json object #1107
Cannot deserialize types using std::ratio #1105
i want to learn json #1104
Type checking during compile #1103
Iterate through sub items #1102
cppcheck failing for version 3.1.2 #1101
Deserializing std::map #1100
accessing key by reference #1098
clang 3.8.0 croaks while trying to compile with debug symbols #1097
Serialize a list of class objects with json #1096
Small question #1094
Upgrading to 3.x: to_/from_json with enum class #1093
Q: few questions about json construction #1092
general crayCC compilation failure #1091
Merge Patch clears original data #1090
[Question] how to use nlohmann/json in c++? #1088
C++17 decomposition declaration support #1087
[Question] Access multi-level json objects #1086
Serializing vector #1085
update nested value in multi hierarchy json object #1084
Overriding default values? #1083
detail namespace collision with Cereal? #1082
Error using json.dump(); #1081
Consuming TCP Stream #1080
Compilation error with strong typed enums in map in combination with namespaces #1079
cassert error #1076
Valid json data not being parsed #1075
Feature request :: Better testing for key existance without try/catch #1074
Hi, I have input like a.b.c and want to convert it to \"a\"{\"b\": \"c\"} form. Any suggestions how do I do this? Thanks. #1073
ADL deserializer not picked up for non default-constructible type #1072
Deserializing std::array doesn't compiler (no insert()) #1071
Serializing OpenCV Mat problem #1070
Compilation error with ICPC compiler #1068
Not existing value, crash #1065
cyryllic symbols #1064
newbie usage question #1063
Trying j["strTest"] = "%A" produces "strTest": "-0X1.CCCCCCCCCCCCCP+205" #1062
convert json value to std::string??? #1061
Commented out test cases, should they be removed? #1060
different behaviour between clang and gcc with braced initialization #1059
json array: initialize with prescribed size and resize method. #1057
Is it possible to use exceptions istead of assertions? #1056
when using assign operator in with json object a static assertion fails.. #1055
Iterate over leafs of a JSON data structure: enrich the JSON pointer API #1054
[Feature request] Access by path #1053
document that implicit js -> primitive conversion does not work for std::string::value_type and why #1052
error: ‘BasicJsonType’ in namespace ‘::’ does not name a type #1051
Destructor is called when filling object through assignement #1050
Is this thing thread safe for reads? #1049
clang-tidy: Call to virtual function during construction #1046
Using STL algorithms with JSON containers with expected results? #1045
Usage with gtest/gmock not working as expected #1044
Consequences of from_json / to_json being in namespace of data struct. #1042
const_reference operator[](const typename object_t::key_type& key) const throw instead of assert #1039
Trying to retrieve data from nested objects #1038
Direct download link for json_fwd.hpp? #1037
I know the library supports UTF-8, but failed to dump the value #1036
Putting a Vec3-like vector into a json object #1035
Ternary operator crash #1034
Issued with Clion Inspection Resolution since 2018.1 #1033
Some testcases fail and one never finishes #1032
Can this class work with wchar_t / std::wstring? #1031
Makefile: Valgrind flags have no effect #1030
「==」 Should be 「>」 #1029
HOCON reader? #1027
add json string in previous string?? #1025
RFC: fluent parsing interface #1023
Does it support chinese character? #1022
to/from_msgpack only works with standard typization #1021
Build failure using latest clang and GCC compilers #1020
can two json objects be concatenated? #1019
Erase by integer index #1018
Function find overload taking a json_pointer #1017
I think should implement an parser function #1016
Readme gif #1015
Python bindings #1014
how to add two json string in single object?? #1012
how to serialize class Object (convert data in object into json)?? #1011
Enable forward declaration of json by making json a class instead of a using declaration #997
compilation error while using intel c++ compiler 2018 #994
How to create a json variable? #990
istream >> json --- 1st character skipped in stream #976
Add a SAX parser #971
How to solve large json file? #927
json_pointer public push_back, pop_back #837
Using input_adapter in a slightly unexpected way #834
Fix -Wno-sometimes-uninitialized by initializing "result" in parse_sax #1200 (thyu)
[RFC] Introduce a new macro function: JSON_INTERNAL_CATCH #1187 (simnalamburt)
Fix unit tests that were silently skipped or crashed (depending on the compiler) #1176 (grembo)
Refactor/no virtual sax #1153 (theodelrieu)
Fixed compiler error in VS 2015 for debug mode #1151 (sonulohani)
Fix links to cppreference named requirements (formerly concepts) #1144 (jrakow)
meson: fix include directory #1142 (jrakow)
Feature/unordered map conversion #1138 (theodelrieu)
fixed compile error for #1045 #1134 (Daniel599)
test (non)equality for alt_string implementation #1130 (agrianius)
remove stringstream dependency #1117 (TinyTinni)
Provide a from_json overload for std::map #1089 (theodelrieu)
fix typo in README #1078 (martin-mfg)
Fix typo #1058 (dns13)
Misc cmake packaging enhancements #1048 (chuckatkins)
Fixed incorrect LLVM version number in README #1047 (jammehcow)
Fix trivial typo in comment. #1043 (coryan)
Package Manager: Spack #1041 (ax3l)
CMake: 3.8+ is Sufficient #1040 (ax3l)
Added support for string_view in C++17 #1028 (gracicot)
Added public target_compile_features for auto and constexpr #1026 (ktonon)

v3.1.2 (2018-03-14)

Full Changelog

3.1.2 (2018-03-14)

Full Changelog

STL containers are always serialized to a nested array like [[1,2,3]] #1013
The library doesn't want to insert an unordered_map #1010
Convert Json to uint8_t #1008
How to compare two JSON objects? #1007
Syntax checking #1003
more than one operator '=' matches these operands #1002
How to check if key existed #1000
nlohmann::json::parse exhaust memory in go binding #999
Range-based iteration over a non-array object #998
get<T> for types that are not default constructible #996
Prevent Null values to appear in .dump() #995
number parsing #993
C2664 (C++/CLR) cannot convert 'nullptr' to 'nullptr &&' #987
Uniform initialization from another json object differs between gcc and clang. #985
Problem with adding the lib as a submodule #983
UTF-8/Unicode error #982
"forcing MSVC stacktrace to show which T we're talking about." error #980
reverse order of serialization #979
Assigning between different json types #977
Support serialisation of unique_ptr<> and shared_ptr<> #975
Unexpected end of input (not same as one before) #974
Segfault on direct initializing json object #973
Segmentation fault on G++ when trying to assign json string literal to custom json type. #972
os_defines.h:44:19: error: missing binary operator before token "(" #970
Passing an iteration object by reference to a function #967
Json and fmt::lib's format_arg() #964
Allowing for user-defined string type in lexer/parser #1009 (nlohmann)
dump to alternative string type, as defined in basic_json template #1006 (agrianius)
Fix memory leak during parser callback #1001 (nlohmann)
fixed misprinted condition detected by PVS Studio. #992 (bogemic)
Fix/basic json conversion #986 (theodelrieu)
Make integration section concise #981 (wla80)

v3.1.1 (2018-02-13)

Full Changelog

Updation of child object isn't reflected in parent Object #968
How to add user defined C++ path to sublime text #966
fast number parsing #965
With non-unique keys, later stored entries are not taken into account anymore #963
Timeout (OSS-Fuzz 6034) #962
Incorrect parsing of indefinite length CBOR strings. #961
Reload a json file at runtime without emptying my std::ifstream #959
Split headers should be part of the release #956
Coveralls shows no coverage data #953
Feature request: Implicit conversion to bool #951
converting json to vector of type with templated constructor #924
No structured bindings support? #901
[Request] Macro generating from_json() and to_json() #895
basic_json::value throws exception instead of returning default value #871
Fix constraints on from_json(CompatibleArrayType) #969 (theodelrieu)
Make coveralls watch the include folder #957 (theodelrieu)
Fix links in README.md #955 (patrikhuber)
Add a note about installing the library with cget #954 (pfultz2)

v3.1.0 (2018-02-01)

Full Changelog

3.1.0 (2018-02-01)

Full Changelog

I have a proposal #949
VERSION define(s) #948
v3.0.1 compile error in icc 16.0.4 #947
Use in VS2017 15.5.5 #946
Process for reporting Security Bugs? #945
Please expose a NLOHMANN_JSON_VERSION macro #943
Change header include directory to nlohmann/json #942
string_type in binary_reader #941
compile error with clang 5.0 -std=c++1z and no string_view #939
Allow overriding JSON_THROW to something else than abort() #938
Handle invalid string in Json file #937
Unused variable 'kMinExp' #935
yytext is already defined #933
Equality operator fails #931
use in visual studio 2015 #929
Relative includes of json_fwd.hpp in detail/meta.hpp. [Develop branch] #928
GCC 7.x issue #926
json_fwd.hpp not installed #923
Use Google Benchmarks #921
Move class json_pointer to separate file #920
Unable to locate 'to_json()' and 'from_json()' methods in the same namespace #917
[answered]Read key1 from .value example #914
Don't use define private public in test files #913
value() template argument type deduction #912
Installation path is incorrect #910
H #909
Build failure using clang 5 #908
Amalgate #907
Update documentation and tests wrt. split headers #906
Lib not working on ubuntu 16.04 #905
Problem when writing to file. #904
C2864 error when compiling with VS2015 and VS 2017 #903
[json.exception.type_error.304] cannot use at() with object #902
How do I forward nlohmann::json declaration? #899
How to effectively store binary data? #898
How to get the length of a JSON string without retrieving its std::string? #897
Regression Tests Failure using "ctest" #887
Discuss: add JSON Merge Patch (RFC 7396)? #877
Discuss: replace static "iterator_wrapper" function with "items" member function #874
Make optional user-data available in from_json #864
Casting to std::string not working in VS2015 #861
Sequential reading of JSON arrays #851
Idea: Handle Multimaps Better #816
Floating point rounding #777
Loss of precision when serializing <double> #360
Templatize std::string in binary_reader #941 #950 (kaidokert)
fix cmake install directory (for real this time) #944 (theodelrieu)
Allow overriding THROW/CATCH/TRY macros with no-exceptions #938 #940 (kaidokert)
Removed compiler warning about unused variable 'kMinExp' #936 (zerodefect)
Fix a typo in README.md #930 (Pipeliner)
Howto installation of json_fwd.hpp (fixes #923) #925 (zerodefect)
fix sfinae on basic_json UDT constructor #919 (theodelrieu)
Floating-point formatting #915 (abolz)
Fix/cmake install #911 (theodelrieu)
fix link to the documentation of the emplace function #900 (Dobiasd)
JSON Merge Patch (RFC 7396) #876 (nlohmann)
Refactor/split it #700 (theodelrieu)

v3.0.1 (2017-12-29)

Full Changelog

3.0.1 (2017-12-29)

Full Changelog

Problem parsing array to global vector #896
Invalid RFC6902 copy operation succeeds #894
How to rename a key during looping? #893
clang++-6.0 (6.0.0-svn321357-1) warning #892
Make json.hpp aware of the modules TS? #891
All enum values not handled in switch cases. ( -Wswitch-enum ) #889
JSON Pointer resolve failure resulting in incorrect exception code #888
Unexpected nested arrays from std::vector #886
erase multiple elements from a json object #884
Container function overview in Doxygen is not updated #883
How to use this for binary file uploads #881
Allow setting JSON_BuildTests=OFF from parent CMakeLists.txt #846
Unit test fails for local-independent str-to-num #845
Another idea about type support #774
Includes CTest module/adds BUILD_TESTING option #885 (TinyTinni)
Fix MSVC warning C4819 #882 (erengy)
Merge branch 'develop' into coverity_scan #880 (nlohmann)
:wrench: Fix up a few more effc++ items #858 (mattismyname)

v3.0.0 (2017-12-17)

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3.0.0 (2017-12-17)

Full Changelog

unicode strings #878
Visual Studio 2017 15.5 C++17 std::allocator deprecations #872
Typo "excpetion" #869
Explicit array example in README.md incorrect #867
why don't you release this from Feb. ? #865
json::parse throws std::invalid_argument when processing string generated by json::dump() #863
code analysis: potential bug? #859
MSVC2017, 15.5 new issues. #857
very basic: fetching string value/content without quotes #853
Ambiguous function call to get with pointer type and constant json object in VS2015 (15.4.4) #852
How to put object in the array as a member? #850
misclick, please ignore #849
Make XML great again. #847
Converting to array not working #843
Iteration weirdness #842
Use reference or pointer as Object value #841
Ambiguity in parsing nested maps #840
could not find from_json() method in T's namespace #839
Incorrect parse error with binary data in keys? #838
using dump() when std::wstring is StringType with VS2017 #836
Show the path of the currently parsed value when an error occurs #835
Repetitive data type while reading #833
Storing multiple types inside map #831
Application terminating #830
Missing CMake hunter package? #828
std::map<std::string, std::string> from json object yields C2665: 'std::pair<const _Kty,_Ty>::pair': none of the 2 overloads could convert all the argument types #827
object.dump gives quoted string, want to use .dump() to generate javascripts. #826
Assertion failed on ["NoExistKey"] of an not existing key of const json& #825
vs2015 error : static member will remain uninitialized at runtime but use in constant-expressions is supported #824
Code Checking Warnings from json.hpp on VS2017 Community #821
Missing iostream in try online #820
Floating point value loses decimal point during dump #818
Conan package for the library #817
stream error #815
Link error when using find() on the latest commit #814
ABI issue with json object between 2 shared libraries #813
scan_string() return token_type::parse_error; when parse ansi file #812
segfault when using fifo_map with json #810
This shit is shit #809
_finite and _isnan are no members of "std" #808
how to print out the line which causing exception? #806
{} uses copy constructor, while = does not #805
json.hpp:8955: multiple definition of function that is not defined twice or more. #804
[question] to_json for base and derived class #803
Misleading error message - unexpected '"' - on incorrect utf-8 symbol #802
json data = std::string_view("hi"); doesn't work? #801
Thread safety of parse() #800
Numbers as strings #799
Tests failing on arm #797
Using your library (without modification) in another library #796
Iterating over sub-object #794
how to get the json object again from which printed by the method of dump() #792
ppa to include source #791
Different include paths in macOS and Ubuntu #790
Missing break after line 12886 in switch/case #789
All unit tests fail? #787
More use of move semantics in deserialization #786
warning C4706 - Visual Studio 2017 (/W4) #784
Compile error in clang 5.0 #782
Error Installing appium_lib with Ruby v2.4.2 Due to JSON #781
::get<int>() fails in new(er) release [MSVC] #780
Type Conversion #779
Segfault on nested parsing #778
Build warnings: shadowing exception id #776
multi-level JSON support. #775
SIGABRT on dump() #773
[Question] Custom StringType template parameter (possibility for a KeyType template parameter) #772
constexpr ALL the Things! #771
error: ‘BasicJsonType’ in namespace ‘::’ does not name a type #770
Program calls abort function #769
[Question] Floating point resolution config during dump() ? #768
make check - no test ran #767
The library cannot work properly with custom allocator based containers #766
Documentation or feature request. #763
warnings in msvc about mix/max macro while windows.h is used in the project #762
std::signbit ambiguous #761
How to use value for std::experimental::optional type? #760
Cannot load json file properly #759
Compilation error with unordered_map< int, int > #758
CBOR string #757
Proposal: out_of_range should be a subclass of std::out_of_range #756
Getter is setting the value to null if the key does not exist #754
parsing works sometimes and crashes others #752
Static_assert failed "incompatible pointer type" with Xcode #751
user-defined literal operator not found #750
getting clean string from it.key() #748
Best method for exploring and obtaining values of nested json objects when the names are not known beforehand? #747
null char at the end of string #746
Incorrect sample for operator >> in docs #745
User-friendly documentation #744
Retrieve all values that match a json path #743
Compilation issue with gcc 7.2 #742
CMake target nlohmann_json does not have src into its interface includes #741
Error when serializing empty json: type must be string, but is object #740
Conversion error for std::map<int, std::string> #739
Dumping Json to file as array #738
nesting json objects #737
where to find general help? #736
Compilation Error on Clang 5.0 Upgrade #735
Compilation error with std::map<std::string, std::string> on vs 2015 #734
Benchmarks for Binary formats #733
Support \n symbols in json string. #731
Project's name is too generic and hard to search for #730
Visual Studio 2015 IntelliTrace problems #729
How to erase nested objects inside other objects? #728
Serialization for CBOR #726
Using json Object as value in a map #725
std::regex and nlohmann::json value #724
Warnings when compiling with VisualStudio 2015 #723
Has this lib the unicode (wstring) support? #722
When will be 3.0 in master? #721
Determine the type from error message. #720
Compile-Error C2100 (MS VS2015) in line 887 json.hpp #719
from_json not working for boost::optional example #718
about from_json and to_json function #717
How to detect parse failure? #715
Parse throw std::ios_base::failure exception when failbit set to true #714
Is there a way of format just making a pretty print without changing the key's orders ? #713
Serialization of array of not same model items #712
pointer to json parse vector #711
Gtest SEH Exception #709
broken from_json implementation for pair and tuple #707
Unevaluated lambda in assert breaks gcc 7 build #705
Issues when adding values to firebase database #704
Floating point equality - revisited #703
Conversion from valarray<double> to json fails to build #702
internal compiler error (gcc7) #701
One build system to rule them all #698
Generated nlohmann_jsonConfig.cmake does not set JSON_INCLUDE_DIR #695
support the Chinese language in json string #694
NaN problem within develop branch #693
Please post example of specialization for boost::filesystem #692
Impossible to do an array of composite objects #691
How to save json to file? #690
my simple json parser #689
problem with new struct parsing syntax #688
Parse error while parse the json string contains UTF 8 encoded document bytes string #684
[question] how to get a string value by pointer #683
create json object from string variable #681
adl_serializer and CRTP #680
Is there a way to control the precision of serialized floating point numbers? #677
Is there a way to get the path of a value? #676
Could the parser locate errors to line? #675
There is performance inefficiency found by coverity tool json2.1.1/include/nlohmann/json.hpp #673
include problem, when cmake on osx #672
Operator= ambiguous in C++1z and GCC 7.1.1 #670
should't the cmake install target be to nlohman/json.hpp #668
deserialise from std::vector #667
How to iterate? #665
could this json lib work on windows? #664
How does from_json work? #662
insert(or merge) object should replace same key , not ignore #661
Parse method doesn't handle newlines. #659
Compilation "note" on GCC 6 ARM #658
Adding additional push_back/operator+= rvalue overloads for JSON object #657
dump's parameter "ensure_ascii" creates too long sequences #656
Question: parsing void * #655
how should I check a string is valid JSON string ? #653
Question: thread safety of read only accesses #651
Eclipse: Method 'size' could not be resolved #649
Update/Add object fields #648
No exception raised for Out Of Range input of numbers #647
Package Name #646
What is the meaning of operator[](T* key) #645
Which is the correct way to json objects as parameters to functions? #644
Method to get string representations of values #642
CBOR serialization of a given JSON value does not serialize #641
Are we forced to use "-fexceptions" flag in android ndk project #640
Comparison of objects containing floats #639
'localeconv' is not supported by NDK for SDK <=20 #638
[Question] cLion integration #637
How to construct an iteratable usage in nlohmann json? #636
[Question] copy assign json-container to vector #635
Get size without .dump() #634
Segmentation fault when parsing invalid json file #633
How to serialize from json to vector<customType>? #632
no member named 'thousands_sep' in 'lconv' #631
[Question] Any fork for (the unsupported) Visual Studio 2012 version? #628
Dependency injection in serializer #627
from_json for std::array #625
Discussion: How to structure the parsing function families #623
Question: How to erase subtree #622
Insertion into nested json field #621
Question: return static json object from function #618
icc16 error #617
[-Wdeprecated-declarations] in row j >> ss; in file json.hpp:7405:26 and FAILED unit tests with MinGWx64! #616
to_json for pairs, tuples #614
Using uninitialized memory 'buf' in line 11173 v2.1.1? #613
How to parse multiple same Keys of JSON and save them? #612
"Multiple declarations" error when using types defined with typedef #611
2.1.1+ breaks compilation of shared_ptr<json> == 0 #610
a bug of inheritance ? #608
std::map key conversion with to_json #607
json.hpp:6384:62: error: wrong number of template arguments (1, should be 2) #606
Incremental parsing: Where's the push version? #605
Is there a way to validate the structure of a json object ? #604
[Question] Issue when using Appveyor when compiling library #603
BOM not skipped when using json:parse(iterator) #602
Use of the binary type in CBOR and Message Pack #601
Newbie issue: how does one convert a map in Json back to std::map? #600
Plugin system #599
Using custom types for scalars? #596
Issues with the arithmetic in iterator and reverse iterator #593
not enough examples #592
in-class initialization for type 'const T' is not yet implemented #591
compiling with gcc 7 -> error on bool operator < #590
Parsing from stream leads to an array #589
Buggy support for binary string data #587
C++17's ambiguous conversion #586
How does the messagepack encoding/decoding compare to msgpack-cpp in terms of performance? #585
is it possible to check existence of a value deep in hierarchy? #584
loading from a stream and exceptions #582
Visual Studio seems not to have all min() function versions #581
Supporting of the json schema #580
Stack-overflow (OSS-Fuzz 1444) #577
Heap-buffer-overflow (OSS-Fuzz 1400) #575
JSON escape quotes #574
error: static_assert failed #573
Storing floats, and round trip serialisation/deserialisation diffs #572
JSON.getLong produces inconsistent results #571
Request: Object.at() with default return value #570
Internal structure gets corrupted while parsing #569
create template <typename Iter> basic_json from_cbor(Iter begin, Iter end) #568
Conan.io #566
contradictory documentation regarding json::find #565
Unexpected '\"' in middle of array #564
Support parse std::pair to Json object #563
json and Microsoft Visual c++ Compiler Nov 2012 CTP #562
from_json declaration order and exceptions #561
Tip: Don't upgrade to VS2017 if using json initializer list constructs #559
parse error - unexpected end of input #558
Cant modify existing numbers inside a json object #557
Better support for SAX style serialize and deserialize in new version? #554
Cannot convert from json array to std::array #553
Do not define an unnamed namespace in a header file (DCL59-CPP) #552
Parse error on known good json file #551
Warning on Intel compiler (icc 17) #550
multiple versions of 'vsnprintf' #549
illegal indirection #548
Ambiguous compare operators with clang-5.0 #547
Using tsl::ordered_map #546
Compiler support errors are inconvenient #544
Duplicate symbols error happens while to_json/from_json method implemented inside entity definition header file #542
consider adding a bool json::is_valid(std::string const&) non-member function #541
Help request #539
How to deal with missing keys in from_json? #538
recursive from_msgpack implementation will stack overflow #537
Exception objects must be nothrow copy constructible (ERR60-CPP) #531
Support for multiple root elements #529
Port has_shape from dropbox/json11 #528
dump_float: truncation from ptrdiff_t to long #527
Make exception base class visible in basic_json #525
msgpack unit test failures on ppc64 arch #524
How about split the implementation out, and only leave the interface? #523
VC++2017 not enough actual parameters for macro 'max' #522
crash on empty ifstream #521
Suggestion: Support tabs for indentation when serializing to stream. #520
Abrt in get_number (OSS-Fuzz 885) #519
Abrt on unknown address (OSS-Fuzz 884) #518
Stack-overflow (OSS-Fuzz 869) #517
Assertion error (OSS-Fuzz 868) #516
NaN to json and back #515
Comparison of NaN #514
why it's not possible to serialize c++11 enums directly #513
clang compile error: use of overloaded operator '<=' is ambiguous with (nlohmann::json{{"a", 5}})["a"] <= 10 #512
Why not also look inside the type for (static) to_json and from_json funtions? #511
Parser issues #509
I may not understand #507
VS2017 min / max problem for 2.1.1 #506
CBOR/MessagePack is not read until the end #505
Assertion error (OSS-Fuzz 856) #504
Return position in parse error exceptions #503
conversion from/to C array is not supported #502
error C2338: could not find to_json() method in T's namespace #501
Test suite fails in en_GB.UTF-8 #500
cannot use operator[] with number #499
consider using __cpp_exceptions and/or __EXCEPTIONS to disable/enable exception support #498
Stack-overflow (OSS-Fuzz issue 814) #497
Using in Unreal Engine - handling custom types conversion #495
Conversion from vector<bool> to json fails to build #494
fill_line_buffer incorrectly tests m_stream for eof but not fail or bad bits #493
Compiling with _GLIBCXX_DEBUG yields iterator-comparison warnings during tests #492
crapy interface #491
Fix Visual Studo 2013 builds. #490
Failed to compile with -D_GLIBCXX_PARALLEL #489
Input several field with the same name #488
read in .json file yields strange sizes #487
json::value_t can't be a map's key type in VC++ 2015 #486
Using fifo_map #485
Cannot get float pointer for value stored as 0 #484
byte string support #483
https://github.com/nlohmann/json#execute-unit-tests #481
Remove deprecated constructor basic_json(std::istream&) #480
writing the binary json file? #479
CBOR/MessagePack from uint8_t * and size #478
Streaming binary representations #477
Reuse memory in to_cbor and to_msgpack functions #476
Error Using JSON Library with arrays C++ #475
Moving forward to version 3.0.0 #474
Inconsistent behavior in conversion to array type #473
Create a [key:member_pointer] map to ease parsing custom types #471
MSVC 2015 update 2 #469
VS2017 implicit to std::string conversion fix. #464
How to make sure a string or string literal is a valid JSON? #458
basic_json templated on a "policy" class #456
json::value(const json_pointer&, ValueType) requires exceptions to return the default value. #440
is it possible merge two json object #428
Is it possible to turn this into a shared library? #420
Further thoughts on performance improvements #418
nan number stored as null #388
Behavior of operator>> should more closely resemble that of built-in overloads. #367
Request: range-based-for over a json-object to expose .first/.second #350
feature wish: JSONPath #343
UTF-8/Unicode escape and dump #330
Serialized value not always can be parsed. #329
Is there a way to forward declare nlohmann::json? #314
Exception line #301
Do not throw exception when default_value's type does not match the actual type #278
dump() method doesn't work with a custom allocator #268
Readme documentation enhancements #248
Use user-defined exceptions #244
Incorrect C++11 allocator model support #161
:white_check_mark: re-added tests for algorithms #879 (nlohmann)
Overworked library toward 3.0.0 release #875 (nlohmann)
:rotating_light: remove C4996 warnings #872 #873 (nlohmann)
:boom: throwing an exception in case dump encounters a non-UTF-8 string #838 #870 (nlohmann)
:memo: fixing documentation #867 #868 (nlohmann)
iter_impl template conformance with C++17 #860 (bogemic)
Std allocator conformance cpp17 #856 (bogemic)
cmake: use BUILD_INTERFACE/INSTALL_INTERFACE #855 (theodelrieu)
to/from_json: add a MSVC-specific static_assert to force a stacktrace #854 (theodelrieu)
Add .natvis for MSVC debug view #844 (TinyTinni)
Updated hunter package links #829 (jowr)
Typos README #811 (Itja)
add forwarding references to json_ref constructor #807 (theodelrieu)
Add transparent comparator and perfect forwarding support to find() and count() #795 (jseward)
Error : 'identifier "size_t" is undefined' in linux #793 (sonulohani)
Fix Visual Studio 2017 warnings #788 (jseward)
Fix warning C4706 on Visual Studio 2017 #785 (jseward)
Set GENERATE_TAGFILE in Doxyfile #783 (eld00d)
using more CMake #765 (nlohmann)
Simplified istream handing #367 #764 (pjkundert)
Add info for the vcpkg package. #753 (gregmarr)
fix from_json implementation for pair/tuple #708 (theodelrieu)
Update json.hpp #686 (GoWebProd)
Remove duplicate word #685 (daixtrose)
To fix compilation issue for intel OSX compiler #682 (kbthomp1)
Digraph warning #679 (traits)
massage -> message #678 (DmitryKuk)
Fix "not constraint" grammar in docs #674 (wincent)
Add documentation for integration with CMake and hunter #671 (dan-42)
REFACTOR: rewrite CMakeLists.txt for better inlcude and reuse #669 (dan-42)
enable_testing only if the JSON_BuildTests is ON #666 (effolkronium)
Support moving from rvalues in std::initializer_list #663 (himikof)
add ensure_ascii parameter to dump. #330 #654 (ryanjmulder)
Rename BuildTests to JSON_BuildTests #652 (olegendo)
Don't include <iostream>, use std::make_shared #650 (olegendo)
Refacto/split basic json #643 (theodelrieu)
fix typo in operator__notequal example #630 (Chocobo1)
Fix MSVC warning C4819 #629 (Chocobo1)
[BugFix] Add parentheses around std::min #626 (koemeet)
add pair/tuple conversions #624 (theodelrieu)
remove std::pair support #615 (theodelrieu)
Add pair support, fix CompatibleObject conversions (fixes #600) #609 (theodelrieu)
#550 Fix iterator related compiling issues for Intel icc #598 (HenryRLee)
Issue #593 Fix the arithmetic operators in the iterator and reverse iterator #595 (HenryRLee)
fix doxygen error of basic_json::get() #583 (zhaohuaxishi)
Fixing assignement for iterator wrapper second, and adding unit test #579 (Type1J)
Adding first and second properties to iteration_proxy_internal #578 (Type1J)
Adding support for Meson. #576 (Type1J)
add enum class default conversions #545 (theodelrieu)
Properly pop diagnostics #540 (tinloaf)
Add Visual Studio 17 image to appveyor build matrix #536 (vpetrigo)
UTF8 encoding enhancement #534 (TedLyngmo)
Fix typo #530 (berkus)
Make exception base class visible in basic_json #526 (ghost)
:art: Namespace uint8_t from the C++ stdlib #510 (alexweej)
add to_json method for C arrays #508 (theodelrieu)
Fix -Weffc++ warnings (GNU 6.3.1) #496 (TedLyngmo)

v2.1.1 (2017-02-25)

Full Changelog

2.1.1 (2017-02-25)

Full Changelog

warning in the library #472
How to create an array of Objects? #470
[Bug?] Cannot get int pointer, but int64_t works #468
Illegal indirection #467
in vs can't find linkageId #466
Roundtrip error while parsing "1000000000000000010E5" #465
C4996 error and warning with Visual Studio #463
Support startIndex for from_cbor/from_msgpack #462
question: monospace font used in feature slideshow? #460
Object.keys() #459
Use “, “ as delimiter for json-objects. #457
Enum -> string during serialization and vice versa #455
doubles are printed as integers #454
Warnings with Visual Studio c++ (VS2015 Update 3) #453
Heap-buffer-overflow (OSS-Fuzz issue 585) #452
use of undeclared identifier 'UINT8_MAX' #451
Question on the lifetime managment of objects at the lower levels #449
Json should not be constructible with 'json*' #448
Move value_t to namespace scope #447
Typo in README.md #446
make check compilation is unneccesarily slow #445
Problem in dump() in json.h caused by ss.imbue #444
I want to create Windows Application in Visual Studio 2015 c++, and i have a problem #443
Implicit conversion issues #442
Parsing of floats locale dependent #302
Speedup CI builds using cotire #461 (tusharpm)
TurpentineDistillery feature/locale independent str to num #450 (nlohmann)
README: adjust boost::optional example #439 (jaredgrubb)
fix #414 - comparing to 0 literal #415 (stanmihai4)
locale-independent num-to-str #378 (TurpentineDistillery)

v2.1.0 (2017-01-28)

Full Changelog

2.1.0 (2017-01-28)

Full Changelog

Parsing multiple JSON objects from a string or stream #438
Use-of-uninitialized-value (OSS-Fuzz issue 477) #437
add reserve function for array to reserve memory before adding json values into it #436
Typo in examples page #434
avoid malformed json #433
How to add json objects to a map? #432
create json instance from raw json (unsigned char*) #431
Getting std::invalid_argument: stream error when following example #429
Forward declare-only header? #427
Implicit conversion from array to object #425
error C4996: 'strerror' when reading file #422
Get an error - JSON pointer must be empty or begin with '/' #421
size parameter for parse() #419
json.hpp forcibly defines GCC_VERSION #417
Use-of-uninitialized-value (OSS-Fuzz issue 377) #416
comparing to 0 literal #414
Single char converted to ASCII code instead of string #413
How to know if a string was parsed as utf-8? #406
Overloaded += to add objects to an array makes no sense? #404
Finding a value in an array #399
add release information in static function #397
Optimize memory usage of json objects in combination with binary serialization #373
Conversion operators not considered #369
Append ".0" to serialized floating_point values that are digits-only. #362
Add a customization point for user-defined types #328
Conformance report for reference #307
Document the best way to serialize/deserialize user defined types to json #298
Add StringView template typename to basic_json #297
[Improvement] Add option to remove exceptions #296
Performance in miloyip/nativejson-benchmark #202
conversion from/to user-defined types #435 (nlohmann)
Fix documentation error #430 (vjon)

v2.0.10 (2017-01-02)

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2.0.10 (2017-01-02)

Full Changelog

Heap-buffer-overflow (OSS-Fuzz issue 367) #412
Heap-buffer-overflow (OSS-Fuzz issue 366) #411
Use-of-uninitialized-value (OSS-Fuzz issue 347) #409
Heap-buffer-overflow (OSS-Fuzz issue 344) #408
Heap-buffer-overflow (OSS-Fuzz issue 343) #407
Heap-buffer-overflow (OSS-Fuzz issue 342) #405
strerror throwing error in compiler VS2015 #403
json::parse of std::string being underlined by Visual Studio #402
Explicitly getting string without .dump() #401
Possible to speed up json::parse? #398
the alphabetic order in the code influence console_output. #396
Execute tests with clang sanitizers #394
Check if library can be used with ETL #361
Feature/clang sanitize #410 (Daniel599)
Add Doozer build badge #400 (andoma)

v2.0.9 (2016-12-16)

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2.0.9 (2016-12-16)

Full Changelog

#pragma GCC diagnostic ignored "-Wdocumentation" #393
How to parse this json file and write separate sub object as json files? #392
Integer-overflow (OSS-Fuzz issue 267) #389
Implement indefinite-length types from RFC 7049 #387
template parameter "T" is not used in declaring the parameter types of function template #386
Serializing json instances containing already serialized string values without escaping #385
Add test cases from RFC 7049 #384
Add a table of contents to the README file #383
Update FAQ section in the guidelines for contributing #382
Allow for forward declaring nlohmann::json #381
Bug in overflow detection when parsing integers #380
A unique name to mention the library? #377
Non-unique keys in objects. #375
Request: binary serialization/deserialization #358
Replace class iterator and const_iterator by using a single template class to reduce code. #395 (Bosswestfalen)
Clang: quiet a warning #391 (jaredgrubb)
Fix issue #380: Signed integer overflow check #390 (qwename)

v2.0.8 (2016-12-02)

Full Changelog

2.0.8 (2016-12-02)

Full Changelog

Reading from file #374
Compiler warnings? #372
docs: how to release a json object in memory? #371
crash in dump #370
Coverity issue (FORWARD_NULL) in lexer(std::istream& s) #368
json::parse on failed stream gets stuck #366
Performance improvements #365
'to_string' is not a member of 'std' #364
Crash in dump() from a static object #359
json::parse(...) vs json j; j.parse(...) #357
Hi, is there any method to dump json to string with the insert order rather than alphabets #356
Provide an example of reading from an json with only a key that has an array of strings. #354
Request: access with default value. #353
{} and [] causes parser error. #352
Reading a JSON file into a JSON object #351
Request: 'emplace_back' #349
Is it possible to stream data through the json parser without storing everything in memory? #347
pure virtual conversion operator #346
Floating point precision lost #345
unit-conversions SIGSEGV on armv7hl #303
Coverity scan fails #299
Using QString as string type #274

v2.0.7 (2016-11-02)

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JSON5 #348
Check "Parsing JSON is a Minefield" #344
Allow hex numbers #342
Convert strings to numbers #341
""-operators ignore the length parameter #340
JSON into std::tuple #339
JSON into vector #335
Installing with Homebrew on Mac Errors (El Capitan) #331
g++ make check results in error #312
Cannot convert from 'json' to 'char' #276
Please add a Pretty-Print option for arrays to stay always in one line #229
Conversion to STL map<string, vector<int>> gives error #220
std::unorderd_map cannot be used as ObjectType #164
fix minor grammar/style issue in README.md #336 (seeekr)

v2.0.6 (2016-10-15)

Full Changelog

How to handle json files? #333
This file requires compiler and library support .... #332
Segmentation fault on saving json to file #326
parse error - unexpected <uninitialized> with 2.0.5 #325
Add nested object capability to pointers #323
Fix usage examples' comments for std::multiset #322
json_unit runs forever when executed in build directory #319
Visual studio 2015 update3 true != TRUE #317
releasing single header file in compressed format #316
json object from std::ifstream #315
make has_mapped_type struct friendly #324 (vpetrigo)
Fix usage examples' comments for std::multiset #321 (vasild)
Include dir relocation #318 (ChristophJud)
trivial documentation fix #313 (5tefan)

v2.0.5 (2016-09-14)

Full Changelog

[feature request]: schema validator and comments #311
make json_benchmarks no longer working in 2.0.4 #310
Segmentation fault (core dumped) #309
No matching member function for call to 'get_impl' #308

v2.0.4 (2016-09-11)

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Parsing fails without space at end of file #306
json schema validator #305
Unused variable warning #304

v2.0.3 (2016-08-31)

Full Changelog

warning C4706: assignment within conditional expression #295
Q: Is it possible to build json tree from already UTF8 encoded values? #293
Equality operator results in array when assigned object #292
Support for integers not from the range [-(2**53)+1, (2**53)-1] in parser #291
Support for iterator-range parsing #290
Horribly inconsistent behavior between const/non-const reference in operator [] () #289
Silently get numbers into smaller types #288
Incorrect parsing of large int64_t numbers #287
[question]: macro to disable floating point support #284
unit-constructor1.cpp: Fix floating point truncation warning #300 (t-b)

v2.0.2 (2016-07-31)

Full Changelog

can function dump() return string in the order I push in the json object ? #286
Error on the Mac: Undefined symbols for architecture x86_64 #285
value() does not work with _json_pointer types #283
Build error for std::int64 #282
strings can't be accessed after dump()->parse() - type is lost #281
Easy serialization of classes #280
recursive data structures #277
hexify() function emits conversion warning #270
let the makefile choose the correct sed #279 (murinicanor)
Update hexify to use array lookup instead of ternary (#270) #275 (dtoma)

v2.0.1 (2016-06-28)

Full Changelog

Compilation error. #273
dump() performance degradation in v2 #272
fixed a tiny typo #271 (feroldi)

v2.0.0 (2016-06-23)

Full Changelog

json::diff generates incorrect patch when removing multiple array elements. #269
Docs - What does Json[key] return? #267
Compiler Errors With JSON.hpp #265
Ambiguous push_back and operator+= overloads #263
Preseving order of items in json #262
'\' char problem in strings #261
VS2015 compile fail #260
-Wconversion warning #259
Maybe a bug #258
Few tests failed on Visual C++ 2015 #257
Access keys when iteration with new for loop C++11 #256
multiline text values #255
Error when using json in g++ #254
is the release 2.0? #253
concatenate objects #252
Encoding #251
Unable to build example for constructing json object with stringstreams #250
Hexadecimal support #249
Update long-term goals #246
Contribution To This Json Project #245
Trouble using parser with initial dictionary #243
Unit test fails when doing a CMake out-of-tree build #241
-Wconversion warnings #239
Additional integration options #237
.get<std::string>() works for non spaced string but returns as array for spaced/longer strings #236
ambiguous overload for 'push_back' and 'operator+=' #235
Can't use basic_json::iterator as a base iterator for std::move_iterator #233
json object's creation can freezes execution #231
Incorrect dumping of parsed numbers with exponents, but without decimal places #230
double values are serialized with commas as decimal points #228
Move semantics with std::initializer_list #225
replace emplace #224
abort during getline in yyfill #223
free(): invalid pointer error in GCC 5.2.1 #221
Error compile Android NDK error: 'strtof' is not a member of 'std' #219
Wrong link in the README.md #217
Wide character strings not supported #216
Memory allocations using range-based for loops #214
would you like to support gcc 4.8.1? #211
Reading concatenated json's from an istream #210
Conflicting typedef of ssize_t on Windows 32 bit when using Boost.Python #204
Inconsistency between operator[] and push_back #203
Small bugs in json.hpp (get_number) and unit.cpp (non-standard integer type test) #199
GCC/clang floating point parsing bug in strtod() #195
What is within scope? #192
Bugs in miloyip/nativejson-benchmark: roundtrips #187
Floating point exceptions #181
Integer conversion to unsigned #178
map string string fails to compile #176
In basic_json::basic_json(const CompatibleArrayType& val), the requirement of CompatibleArrayType is not strict enough. #174
Provide a FAQ #163
Implicit assignment to std::string fails #144
Fix Issue #265 #266 (06needhamt)
Define CMake/CTest tests #247 (robertmrk)
Out of tree builds and a few other miscellaneous CMake cleanups. #242 (ChrisKitching)
Implement additional integration options #238 (robertmrk)
make serialization locale-independent #232 (nlohmann)
fixes #223 by updating README.md #227 (kevin--)
Use namespace std for int64_t and uint64_t #226 (lv-zheng)
Added missing cerrno header to fix ERANGE compile error on android #222 (Teemperor)
Corrected readme #218 (Annihil)
Create PULL_REQUEST_TEMPLATE.md #213 (whackashoe)
fixed noexcept; added constexpr #208 (nlohmann)
Add support for afl-fuzz testing #207 (mykter)
replaced ssize_t occurrences with auto (addresses #204) #205 (nlohmann)
Fixed issue #199 - Small bugs in json.hpp (get_number) and unit.cpp (non-standard integer type test) #200 (twelsby)
Fix broken link #197 (vog)
Issue #195 - update Travis to Trusty due to gcc/clang strtod() bug #196 (twelsby)
Issue #178 - Extending support to full uint64_t/int64_t range and unsigned type (updated) #193 (twelsby)

v1.1.0 (2016-01-24)

Full Changelog

Small error in pull #185 #194
Bugs in miloyip/nativejson-benchmark: floating-point parsing #186
Floating point equality #185
Unused variables in catch #180
Typo in documentation #179
JSON performance benchmark comparision #177
Since re2c is often ignored in pull requests, it may make sense to make a contributing.md file #175
Question about exceptions #173
Android? #172
Cannot index by key of type static constexpr const char* #171
Add assertions #168
MSVC 2015 build fails when attempting to compare object_t #167
Member detector is not portable #166
Unnecessary const_cast #162
Question about get_ref() #128
range based for loop for objects #83
Consider submitting this to the Boost Library Incubator #66
Fixed Issue #186 - add strto(f|d|ld) overload wrappers, "-0.0" special case and FP trailing zero #191 (twelsby)
Issue #185 - remove approx() and use #pragma to kill warnings #190 (twelsby)
Fixed Issue #171 - added two extra template overloads of operator[] for T* arguments #189 (twelsby)
Fixed issue #167 - removed operator ValueType() condition for VS2015 #188 (twelsby)
Implementation of get_ref() #184 (dariomt)
Fixed some typos in CONTRIBUTING.md #182 (nibroc)

v1.0.0 (2015-12-27)

Full Changelog

add key name to exception #160
Getting member discarding qualifyer #159
basic_json::iterator::value() output includes quotes while basic_json::iterator::key() doesn't #158
Indexing const basic_json<> with const basic_string<char> #157
token_type_name(token_type t): not all control paths return a value #156
prevent json.hpp from emitting compiler warnings #154
json::parse(string) does not check utf8 bom #152
unsigned 64bit values output as signed #151
Wish feature: json5 #150
Unable to compile on MSVC 2015 with SDL checking enabled: This function or variable may be unsafe. #149
"Json Object" type does not keep object order #148
dump() convert strings encoded by utf-8 to shift-jis on windows 10. #147
Unable to get field names in a json object #145
Question: Is the use of incomplete type correct? #138
json.hpp:5746:32: error: 'to_string' is not a member of 'std' #136
Bug in basic_json::operator[] const overload #135
wrong enable_if for const pointer (instead of pointer-to-const) #134
overload of at() with default value #133
Splitting source #132
Question about get_ptr() #127
Visual Studio 14 Debug assertion failed #125
Memory leak in face of exceptions #118
Find and Count for arrays #117
dynamically constructing an arbitrarily nested object #114
Returning any data type #113
Compile error with g++ 4.9.3 cygwin 64-bit #112
insert json array issue with gcc4.8.2 #110
error: unterminated raw string #109
vector<json> copy constructor really weird #108
[clang-3.6.2] string/sstream with number to json issue #107
object field accessors #103
v8pp and json #95
Wishlist #65
Windows/Visual Studio (through 2013) is unsupported #62
Replace sprintf with hex function, this fixes #149 #153 (whackashoe)
Fix character skipping after a surrogate pair #146 (robertmrk)
Detect correctly pointer-to-const #137 (dariomt)
disabled "CopyAssignable" test for MSVC in Debug mode, see #125 #131 (dariomt)
removed stream operator for iterator, resolution for #125 #130 (dariomt)
fixed typos in comments for examples #129 (dariomt)
Remove superfluous inefficiency #126 (d-frey)
remove invalid parameter '-stdlib=libc++' in CMakeLists.txt #124 (emvivre)
exception-safe object creation, fixes #118 #122 (d-frey)
Fix small oversight. #121 (ColinH)
Overload parse() to accept an rvalue reference #120 (silverweed)
Use the right variable name in doc string #115 (whoshuu)

v1.0.0-rc1 (2015-07-26)

Full Changelog

Finish documenting the public interface in Doxygen #102
Binary string causes numbers to be dumped as hex #101
failed to iterator json object with reverse_iterator #100
'noexcept' : unknown override specifier #99
json float parsing problem #98
Adjust wording to JSON RFC #97
static analysis warnings #94
reverse_iterator operator inheritance problem #93
init error #92
access by (const) reference #91
is_integer and is_float tests #90
Nonstandard integer type #89
static library build #84
lexer::get_number return NAN #82
MinGW have no std::to_string #80
Incorrect behaviour of basic_json::count method #78
Invoking is_array() function creates "null" value #77
dump() / parse() not idempotent #76
Handle infinity and NaN cases #70
errors in g++-4.8.1 #68
Keys when iterating over objects #67
Compilation results in tons of warnings #64
Complete brief documentation #61
Double quotation mark is not parsed correctly #60
Get coverage back to 100% #58
erase elements using iterators #57
Removing item from array #56
Serialize/Deserialize like PHP? #55
Numbers as keys #54
Why are elements alphabetized on key while iterating? #53
Document erase, count, and iterators key and value #52
Do not use std::to_string #51
Supported compilers #50
Confused about iterating through json objects #49
Use non-member begin/end #48
Erase key #47
Key iterator #46
Add count member function #45
Problem getting vector (array) of strings #44
Compilation error due to assuming that private=public #43
Use of deprecated implicit copy constructor #42
Printing attribute names #39
dumping a small number_float just outputs 0.000000 #37
find is error #32
Avoid using spaces when encoding without pretty print #31
Cannot encode long numbers #30
segmentation fault when iterating over empty arrays/objects #28
Creating an empty array #27
Custom allocator support #25
make the type of the used string container customizable #20
Improper parsing of JSON string "\" #17
create a header-only version #16
Don't return "const values" #15
Add to_string overload for indentation #13
string parser does not recognize uncompliant strings #12
possible double-free in find function #11
UTF-8 encoding/deconding/testing #10
move code into namespace #9
free functions for explicit objects and arrays in initializer lists #8
unique_ptr for ownership #7
Add unit tests #4
Drop C++98 support #3
Test case coverage #2
Runtime error in Travis job #1
Keyword 'inline' is useless when member functions are defined in headers #87 (ahamez)
Remove useless typename #86 (ahamez)
Avoid warning with Xcode's clang #85 (ahamez)
Fix typos #73 (aqnouch)
Replace default_callback function with nullptr and check for null… #72 (aburgh)
support enum #71 (likebeta)
Fix performance regression introduced with the parsing callback feature. #69 (aburgh)
Improve the implementations of the comparission-operators #63 (Florianjw)
Fix compilation of json_unit with GCC 5 #59 (dkopecek)
Parse streams incrementally. #40 (aburgh)
Feature/small float serialization #38 (jrandall)
template version with re2c scanner #36 (nlohmann)
more descriptive documentation in example #33 (luxe)
Fix string conversion under Clang #26 (wancw)
Fixed dumping of strings #24 (Teemperor)
Added a remark to the readme that coverage is GCC only for now #23 (Teemperor)
Unicode escaping #22 (Teemperor)
Implemented the JSON spec for string parsing for everything but the \uXXXX escaping #21 (Teemperor)
add the std iterator typedefs to iterator and const_iterator #19 (kirkshoop)
Fixed escaped quotes #18 (Teemperor)
Fix double delete on std::bad_alloc exception #14 (elliotgoodrich)
Added CMake and lcov #6 (Teemperor)
Version 2.0 #5 (nlohmann)

* This Changelog was automatically generated by github_changelog_generator

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Changelog

3.11.2 (2022-08-12)

v3.11.1 (2022-08-01)

v3.11.0 (2022-08-01)

v3.10.5 (2022-01-03)

v3.10.4 (2021-10-16)

v3.10.3 (2021-10-08)

v3.10.2 (2021-08-26)

v3.10.1 (2021-08-24)

v3.10.0 (2021-08-17)

v3.9.1 (2020-08-06)

v3.9.0 (2020-07-27)

v3.8.0 (2020-06-14)

v3.7.3 (2019-11-17)

v3.7.2 (2019-11-10)

v3.7.1 (2019-11-06)

v3.7.0 (2019-07-28)

v3.6.1 (2019-03-20)

3.6.1 (2019-03-20)

v3.6.0 (2019-03-19)

v3.5.0 (2018-12-21)

v3.4.0 (2018-10-30)

v3.3.0 (2018-10-05)

3.3.0 (2018-10-05)

v3.2.0 (2018-08-20)

3.2.0 (2018-08-20)

v3.1.2 (2018-03-14)

3.1.2 (2018-03-14)

v3.1.1 (2018-02-13)

v3.1.0 (2018-02-01)

3.1.0 (2018-02-01)

v3.0.1 (2017-12-29)

3.0.1 (2017-12-29)

v3.0.0 (2017-12-17)

3.0.0 (2017-12-17)

v2.1.1 (2017-02-25)

2.1.1 (2017-02-25)

v2.1.0 (2017-01-28)

2.1.0 (2017-01-28)

v2.0.10 (2017-01-02)

2.0.10 (2017-01-02)

v2.0.9 (2016-12-16)

2.0.9 (2016-12-16)

v2.0.8 (2016-12-02)

2.0.8 (2016-12-02)

v2.0.7 (2016-11-02)

v2.0.6 (2016-10-15)

v2.0.5 (2016-09-14)

v2.0.4 (2016-09-11)

v2.0.3 (2016-08-31)

v2.0.2 (2016-07-31)

v2.0.1 (2016-06-28)

v2.0.0 (2016-06-23)

v1.1.0 (2016-01-24)

v1.0.0 (2015-12-27)

v1.0.0-rc1 (2015-07-26)

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