fork(8) download 
  1. #include <functional>
  2.  
  3. std::function<int()> dowork()
  4. {
  5.     int answer = 42;
  6.     auto lambda = [answer] () { return answer; };
  7.  
  8.     // can do what we want
  9.     answer = 666;
  10.     return lambda;
  11. }
  12.  
  13. int main()
  14. {
  15.     auto ll = dowork();
  16.     return ll(); // 42
  17. }
  18.  
Success #stdin #stdout 0s 2956KB
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stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/Ly38P
language:
C++14 (gcc 8.3)
created:
13 years ago
visibility:
public

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