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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. struct foo {
  5.     int value;
  6.  
  7.     explicit foo(int value) : value(value) {
  8.         std::cout << "foo(" << value << ")\n";
  9.     }
  10.  
  11.     foo(foo const& other) : value(other.value) {
  12.         std::cout << "foo(foo(" << value << "))\n";
  13.     }
  14.  
  15.     foo(foo&& other) : value(std::move(other.value)) {
  16.         other.value = -1;
  17.         std::cout << "foo(move(foo(" << value << "))\n";
  18.     }
  19.  
  20.     ~foo() {
  21.         if (value != -1)
  22.             std::cout << "~foo(" << value << ")\n";
  23.     }
  24. };
  25.  
  26. int main() {
  27.     std::vector<foo> foos;
  28.     foos.emplace_back(1);
  29.     foos.emplace_back(2);
  30. }
Success #stdin #stdout 0s 2964KB
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Standard input is empty
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foo(1)
foo(2)
foo(move(foo(1))
~foo(1)
~foo(2)
https://ideone.com/2EPxu
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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