Re: Problem overloading operator= in a class

From:

"Daniel T." <daniel_t@earthlink.net>

Newsgroups:

comp.lang.c++

Date:

Sun, 20 May 2007 02:43:57 GMT

Message-ID:

<daniel_t-DAABF8.22435419052007@news.west.earthlink.net>

In article <f87v435hhllqpll2rhs3nar23lt0uvv3ru@4ax.com>,
Lilith <lilith@dcccd.edu> wrote:

I have a class called Intersection which contains the following with
public access...

Intersection operator= (Intersection &i);

It's defined as...

Intersection Intersection::operator= (Intersection &i)
{
    this->ID = i.ID;
    this->x = i.x;
[snip]
    this->se = i.se;
    this->ss = i.ss;
    this->sw = i.sw;
}

If all your op= does is assign each member to its corresponding member,
then remove the op= from your class and everything will work.

BTW, the canonical op= is "Type& operator=( const Type& );" and
sometimes you will see, "Type& operator=( Type );" or even "const Type&
operator=( const Type& );"

Your signature is rather non-standard.

Can anyone see where my error is?

Your error is that you are not showing the code that fails to compile.
Note that the code below compiles fine.

class Intersection
{
public:
   Intersection operator=( Intersection& i );
};

Intersection Intersection::operator=( Intersection& i )
{
   return *this;
}

void clearLandscape()
{
   Intersection temp;
   Intersection landscape[250];
   for (int j=0; j < 250; j++) {
      landscape[j] = temp;
   }
}