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  1. #include <iostream>
  2. #include <cassert>
  3. #include <functional>
  4. using namespace std;
  5.  
  6. int main() {
  7. 	double a = 5.;
  8.     double b = 3.;
  9.     double& ref = a;
  10.     ref = b;
  11.     assert(&ref != b); // ref is not bound to b
  12.     std::reference_wrapper<double> refwpr = a;
  13.     refwpr = b;
  14.     assert(&refwpr.get() == b); // ref wrapper was rebound to b
  15. 	return 0;
  16. }
Success #stdin #stdout 0s 3452KB
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https://ideone.com/qiKOU8
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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