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  1. #include <iostream>
  2. #include <vector>
  3. #include <functional>
  4. using namespace std;
  5.  
  6. int main (int, char**) {
  7.   int object = 21; // half of the answer
  8.   vector<reference_wrapper<int>> v;
  9.   v.push_back(object);
  10.   v[0].get() = 42; // assignment needs explicit conversion of lhs to a real reference
  11.   cout << "the answer is " << object << endl;
  12.   return 0;
  13. }
Success #stdin #stdout 0s 3412KB
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stdin
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Standard input is empty
stdout
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the answer is 42
https://ideone.com/IaAJkX
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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