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  1. #include <iostream>
  2.  
  3. class Foo {
  4. public:
  5.     Foo() = default;
  6.  
  7.     Foo(const Foo&) = default;
  8.     Foo(Foo&&) noexcept = default;
  9.  
  10.     Foo& operator=(const Foo& rhs) & {
  11.         std::cout << "copy\n";
  12.  
  13.         return *this;
  14.     }
  15.  
  16.     Foo& operator=(Foo&& rhs) & noexcept {
  17.         std::cout << "move\n";
  18.  
  19.         return *this;
  20.     }
  21.  
  22.     Foo operator+(const Foo& rhs) const {
  23.         Foo x; // with some calculation
  24.  
  25.         return x;
  26.     }
  27. };
  28.  
  29. int main() {
  30.     Foo a, b, c;
  31.  
  32.     a = b + c;
  33. }
Success #stdin #stdout 0s 4536KB
comments (?)
stdin 
Standard input is empty
stdout 
move
https://ideone.com/bOQwwq
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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