#define JSON_HAS_THREE_WAY_COMPARISON /* value */
This macro indicates whether the compiler and standard library support 3-way comparison. Possible values are 1
when supported or 0
when unsupported.
The default value is detected based on the preprocessor macros #!cpp __cpp_impl_three_way_comparison
and #!cpp __cpp_lib_three_way_comparison
.
When the macro is not defined, the library will define it to its default value.
??? example
The code below forces the library to use 3-way comparison: ```cpp #define JSON_HAS_THREE_WAY_COMPARISON 1 #include <nlohmann/json.hpp> ... ```