c++ - C++ standard way to check if type has function with specific signature

Question

This question is related to: Check if a class has a member function of a given signature

Is this functionality implemented by C++11 standard or do I need to use custom implementation?

Answer 1

Is this functionality implemented by C++11 standard

No, it's not. Implementing something like this generally had to be done using macros, to pass the function name in.

do I need to use custom implementation?

Probably not. Such stuff is seldomly needed. There might be other solutions to your underlying problem.