c++ - Undefining min and max macros -


in source code, saw min , max being undefined. reason that?

// remove stupid msvc min/max macro definitions #ifdef win32    #undef min    #undef max #endif

some msvc header has pre-processor macros define min , max. bad many reasons. first, not reserved names, second, there standard library functions same names.

so msvc or whatever breaking rules , code defining min , max macros, , use of undef work-around fix problem.

see this related question, shows how defines can break code.


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