Operator overloading outside class
- by bobobobo
There are two ways to overload operators for a C++ class:
Inside class
class Vector2
{
public:
float x, y ;
Vector2 operator+( const Vector2 & other )
{
Vector2 ans ;
ans.x = x + other.x ;
ans.y = y + other.y ;
return ans ;
}
} ;
Outside class
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 ;
}
(Apparently in C# you can only use the "outside class" method.)
In C++, which way is more correct? Which is preferable?
