Operator overloading outside class

//Overloading an operator ouside a class
//Note that unlike when it's done inside a class
//the + operator requires 2 arguments instead of 1
//this is because there is no "this" object to be the 
//default lvalue

class Vector2
{
public:
    float x, y ;
} ;

Vector2 operator+( const Vector2& v1, const Vector2& v2 )
{
    Vector2 ans ;
    ans.x = v1.x + v2.x ;
    ans.y = v1.y + v2.y ;
    return ans ;
}

Source: stackoverflow.com

Similar codes

-1 vote170 views1 answer
C++ if else
C++
0 vote153 views1 answer
Kadane algorithm with negative numbers included as sum
C++
0 vote160 views1 answer
C++ unittest in ros
C++
1 vote155 views1 answer
0009:err:mscoree:CLRRuntimeInfo_GetRuntimeHost Wine Mono is not installed
C++
0 vote160 views1 answer
Input n space separated integers in c++
C++
0 vote160 views1 answer
Print all even number using for loop c++
C++
0 vote196 views1 answer
Unary overload operator cpp
C++
0 vote156 views1 answer
C++ qt QFuture
C++
0 vote179 views1 answer
Free pair c++
C++
1 vote154 views1 answer
Locate specific string letters c++
C++