std Function 사용법 예제

#include <QCoreApplication>
#include <iostream>
#include <functional>
 
using namespace std;
 
 
template <typename T>
auto co_T(T t_) -> decltype (t_){
    cout << typeid (t_).name() << " : " << t_ << endl;
 
    return t_;
}
 
template<typename T>
auto add(T _t1, T _t2, function<int(T, T)> _fx){
 
    return _fx(_t1, _t2);
}
 
 
 
 
 
 
int main(int argc, char *argv[])
{
    int r = add<int>(1, 2 , [](int x, int y){ return x + y ;});
    co_T(r);
 
   return 0;
 
}