fork download
copy 
  1. #include <functional>
  2. #include <iostream>
  3.  
  4. using namespace std;
  5.  
  6. struct Gadget
  7. {
  8.     void operator()(){}
  9.     ~Gadget(){ cout << "~" << endl; }
  10. };
  11.  
  12. struct Widget
  13. {
  14.     Gadget x;
  15.     function<void()> operator()()
  16.     {
  17.         return [=]{ x(); cout << "lambda" << endl; };
  18.     }
  19. };
  20. int main()
  21. {
  22.    auto &&x = Widget{}();
  23.    x();
  24. }
Success #stdin #stdout 0s 2984KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
~
lambda
https://ideone.com/1MTGQE
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!