fork download 
  1. #include <iostream>
  2.  
  3. template <typename T>
  4. void foo (T &x) {
  5.     std::cout << "non-temporary version: " << x.value() << std::endl;
  6. }
  7.  
  8. template <typename T>
  9. void foo (const T &x) {
  10.     std::cout << "temporary copied to ";
  11.     T copy(x);
  12.     foo(copy);
  13. }
  14.  
  15. struct Bar {
  16.     const char *value () { return "hi"; }
  17. };
  18.  
  19. int main ()
  20. {
  21.     Bar b;
  22.     foo(b);
  23.     foo(Bar());
  24.     return 0;
  25. }
Success #stdin #stdout 0s 2896KB
comments (?)
stdin 
Standard input is empty
stdout 
non-temporary version: hi
temporary copied to non-temporary version: hi
https://ideone.com/3I6hsv
language:
C++ (gcc 8.3)
created:
12 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!