anonymous functor
1 int function (int a) {
2 return a + 3;
3 }
4
5 class Functor {
6 public:
7 int operator()(int a) {
8 return a + 3;
9 }
10 };
11
12 int main() {
13 auto lambda = [] (int a) { return a + 3; };
14
15 Functor functor;
16
17 volatile int y1 = function(5);
18 volatile int y2 = functor(5);
19 volatile int y3 = lambda(5);
20
21 return 0;
22 }