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  1. #include <functional>
  2.  
  3. struct callback : std::function<void(const callback&)> {
  4.   using	std::function<void(const callback&)>::function;
  5. };
  6.  
  7. void test(const callback& cb) {}
  8.  
  9. int main() {
  10. 	callback cb = test;
  11. 	test(cb);
  12. 	return 0;
  13. }
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https://ideone.com/xSPQqO
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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