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  1. 	#include <iostream>
  2. 	#include <memory>
  3.  
  4. 	struct Obj {
  5. 		int a;
  6. 		int b;
  7. 	};
  8.  
  9.     template<typename ClsType, typename ValueType, size_t N>
  10.     void fn(const ClsType (&os)[N], ValueType ClsType::*member, ValueType (&out)[N])
  11.     {
  12.         for (size_t i = 0; i < N; ++i) {
  13.             out[i] = os[i].*member;
  14.         }
  15.     }	
  16.  
  17. 	int main() {
  18. 		Obj os[] { { 1, 10 }, { 2, 20 } };
  19. 		int a1[2];
  20. 		int a2[2];
  21.  
  22. 		fn(os, &Obj::a, a1);
  23. 		fn(os, &Obj::b, a2);
  24.  
  25. 		for (size_t i = 0; i < 2; ++i) {
  26. 			std::cout << i << ": " << a1[i] << ", " << a2[i] << '\n';
  27. 		}
  28. 	}
Success #stdin #stdout 0s 3412KB
comments (?)
stdin
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Standard input is empty
stdout
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0: 1, 10
1: 2, 20
https://ideone.com/PYzNSo
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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