fork download
copy 
  1. #include <functional>
  2. #include <iostream>
  3.  
  4. template<typename T>
  5. struct mystruct
  6. {
  7.     T variable;
  8. };
  9.  
  10. int myfunc(int x)
  11. {
  12.     return 2*x;
  13. }
  14.  
  15. template<typename T>
  16. int calculate(
  17.     mystruct<T> custom_struct,
  18.     std::function<T(T)> custom_func)
  19. {
  20.     return custom_func(custom_struct.variable);
  21. }
  22.  
  23. int main()
  24. {
  25.     mystruct<int> A;
  26.     A.variable=6;
  27.     std::cout<<calculate<int>(A,myfunc)<<std::endl; // error here!!!
  28.     return 0;
  29. }
  30.  
Success #stdin #stdout 0s 16064KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
12
https://ideone.com/mdsZ7O
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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!