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  1. #include<iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.     int a = 0;
  6.     auto l = [a]() mutable { cout << ++a << endl; };
  7.     cout << "repeated calls of the lambda does change something:" << endl;
  8.     l();
  9.     l();
  10.     l();
  11.     cout << "... but a itself hasn't changed. a=" << a << endl;
  12. }
Success #stdin #stdout 0s 2828KB
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Standard input is empty
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repeated calls of the lambda does change something:
1
2
3
... but a itself hasn't changed. a=0
https://ideone.com/F1oxF
language:
C++14 (gcc 8.3)
created:
14 years ago
visibility:
public

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