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Overloading the = operator?

Posted on 2000-04-07
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Last Modified: 2010-04-02
I have a class

class myClass {
  private:
    CString m_FirstName;
    CString m_LastName;

  public:
    // getter and setter methods..
    // blablabla.. the usual..
}

I want to overload the = operator, but I get some funny error messages like:

E:\radec\src\GlobalDirectory\GLOBDir.cpp(101) : error C2679: binary '=' : no operator defined which takes a right-hand operand of type 'class CTAG' (or there is no acceptable conversion)

What do I do wrong?

I only want to be able to do the following:

myClass c1,c2;
...
...
c1 = c2; <- I wanna do this
...



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Question by:lar_jens
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4 Comments
 
LVL 7

Accepted Solution

by:
KangaRoo earned 200 total points
ID: 2692569
class myClass {
  private:
     CString m_FirstName;
     CString m_LastName;

  public:
  // getter and setter methods..
  // blablabla.. the usual..

  myClass& operator=(const myClass& other);
}

myClass& myClass::operator=(const myClass& other)
{
    m_FirstName = other.m_FirstName;
    m_LastName = other.m_LastName;
    return *this;
}
0
 
LVL 1

Expert Comment

by:mahno
ID: 2692581
Hi lar_jens,

..h file:
//...
public:
myClass operator = (const myClass &Arg);
//...


..cpp file:
myClass myClass::operator = (const myClass &Arg) {
  //...
  return *this;
}

Hope that helps
  mahno

0
 
LVL 1

Author Comment

by:lar_jens
ID: 2692591
Thank you.. =)
0
 
LVL 22

Expert Comment

by:nietod
ID: 2693052
mahno. In most cases operator = can return a reference.  That will usually be better than returning a value.
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