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  1.  
  2.     #include <iostream>
  3.     #include <list>
  4.     #include <functional>
  5.     using namespace std;
  6.  
  7.     int main() {
  8.     	int a = 2, b = 6, c = 1;
  9.  
  10.     	list<reference_wrapper<int>> mylist;
  11.     	mylist.push_back(a);
  12.     	mylist.push_back(b);
  13.     	mylist.push_back(c);
  14.  
  15.     	for(auto x : mylist) {
  16.     		cout << x << " ";
  17.     	}
  18.     	cout << endl;
  19.     	a = 3; // <- this setting will modify mylist!
  20.  
  21.     	for(auto x : mylist) {
  22.     		cout << x << " ";
  23.     	}
  24.     	return 0;
  25.     }
  26.  
Success #stdin #stdout 0s 3456KB
comments (?)
stdin 
Standard input is empty
stdout 
2 6 1 
3 6 1
https://ideone.com/3G2MxL
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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