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  1. #include <iostream>
  2. #include <functional>
  3.  
  4. class Callback {
  5. public:
  6.     using callback_type = std::function<void()>;
  7.  
  8.     Callback( callback_type cb ) : m_cb( cb ) {}
  9.     void call() { m_cb(); }
  10.  
  11. private:
  12.     callback_type m_cb;
  13. };
  14.  
  15. int main()
  16. {
  17.     int v;
  18.     Callback c( [=]{ int x = v; } );
  19.     c.call();
  20. }
Success #stdin #stdout 0s 4564KB
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https://ideone.com/HmAEsf
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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