Programming Forums > Application Development > C++

uman · Feb 20th, 2005, 1:01 PM

Hi, the operator + function for my class works fine, but I think I'm having trouble with the +=. Is this how you should do it?

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Scene& Scene::operator +=(Scene param)
{
	*this=*this+param;
	return *this;
}

Eggbert · Feb 20th, 2005, 2:20 PM

+= is actually more fundamental than +. Try defining += as a member function of your class and then defining + as a non-member function in terms of +=.

Feb 20th, 2005, 1:01 PM	#1
uman Expert Programmer Join Date: Dec 2004 Posts: 794 Rep Power: 4	operator += with user-defined classes. Hi, the operator + function for my class works fine, but I think I'm having trouble with the +=. Is this how you should do it? (Toggle Plain Text) Scene& Scene::operator +=(Scene param) { this=this+param; return this; } Scene& Scene::operator +=(Scene param) { this=this+param; return this; }

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Feb 20th, 2005, 2:20 PM	#2
Eggbert Professional Programmer Join Date: Nov 2004 Posts: 250 Rep Power: 4	+= is actually more fundamental than +. Try defining += as a member function of your class and then defining + as a non-member function in terms of +=.

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Programming Forums > Application Development > C++

operator += with user-defined classes.