Shulou(Shulou.com)06/01 Report--

This article mainly explains "how to use C++ std::less", the explanation content in the article is simple and clear, easy to learn and understand, please follow the idea of Xiaobian slowly, together to study and learn "how to use C++ std::less" bar!

Example code:

#include

#include

template

bool f(A a, B b, U u = U())

{

return u(a, b);

}

int main()

{

std::cout

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