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spree

operator overloading in c++

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Hey I need to overide the operator float = MyObj class MyObj {... float operator=() {...} }; ? or because that there is a primitive type (float) on the left, i should make it as a friend function? : class MyObj {... friend float operator(MyObj); } ?

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You can overload the operator "conversion to float":

class MyObject {
operator float () const {
//...
}
};

MyObject obj;
float f = obj;

Operator = can only be overloaded inside the class of the lefthand side.

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Quote:
Original post by spree
thanks it worked :)
But why couldnt it be
friend void operator=(float &size,V2D &obj);

operator= is one of the few operators that is required to be overloaded as a member function (and you can't make a member function of a float). You also can only overload the arrow operator and the bracket operator as member functions as well.

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