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  1. #include <iostream>
  2.  
  3. template <typename T>
  4. void func_impl(T&) {std::cout << "lvalue\n";}
  5.  
  6. template <typename T>
  7. void func_impl(const T&) {std::cout << "const lvalue\n";}
  8.  
  9. template <typename T>
  10. void func_impl(T&&) {std::cout << "rvalue\n";}
  11.  
  12. template <typename T>
  13. void func_impl(const T&&) {std::cout << "const rvalue\n";}
  14.  
  15. template <typename T>
  16. void func(T &&t)
  17. {
  18. 	func_impl(std::forward<T>(t));
  19. }
  20.  
  21. int main()
  22. {
  23. 	int lvalue = 0;
  24. 	const int clvalue = 0;
  25. 	func(lvalue);
  26. 	func(clvalue);
  27. 	func(4);
  28. }
Success #stdin #stdout 0s 3096KB
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stdin
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Standard input is empty
stdout
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lvalue
const lvalue
rvalue
https://ideone.com/C8lfkC
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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