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- #include <iostream>
- #include <nlohmann/json.hpp>
- using json = nlohmann::json;
- int main()
- {
- try
- {
- // calling at() for a non-existing key
- json j = {{"foo", "bar"}};
- json k = j.at("non-existing");
- }
- catch (json::exception& e)
- {
- // output exception information
- std::cout << "message: " << e.what() << '\n'
- << "exception id: " << e.id << std::endl;
- }
- }
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