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

Just use a lambda:

[](unsigned char c){ return !std::isspace(c); }

Note that I changed the argument type to unsigned char, see the notes for std::isspace for why.

std::ptr_fun was deprecated in C++11, and will be removed completely in C++17.