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snj/gist:7079322

Created Oct 21, 2013
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What would you like to do?
swap a and b without tmp var
#include <iostream>
void swap(int& a, int& b){
b ^= a; a ^= b; b ^= a;
}
int main(){
int a = 1, b = 2;
swap(a, b);
std::cout << a << " " << b << std::endl;
return 0;
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