std::ptr_fun replacement for c++17

Question

I am using std::ptr_fun as follows:

static inline std::string <rim(std::string &s) {
    s.erase(s.begin(), std::find_if(s.begin(), s.end(         


        

Answer 1

According to cppreference, std::ptr_fun is deprecated since C++11 and discontinued since C++17.

Similarly, std::not1 is deprecated since C++17.

So best don't use either, but a lambda (as explained in other answers).