what exacly (this->) mean?

This is a discussion on what exacly (this->) mean? within the C++ Programming forums, part of the General Programming Boards category; i am reading a c++ book and i come a long with a chapter thats about the this-> poiter what ...

  1. #1
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    what exacly (this->) mean?

    i am reading a c++ book and i come a long with a chapter thats about the this-> poiter what exactly this pointer does can anyone cleanyl explain to me thx.
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  2. #2
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    it's a pointer to yourself so you can tell other objects where you are.

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    can you explain this a little bit detailed thx.
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    It seems like there just HAS to be a FAQ on this. hmmm. Oh well. Here goes.

    simplest terms... from any method in a class, "this" means a pointer to the object you are in. You can use it like you would use any pointer. You would most likely use it to leave a link to yourself somewhere. For instance if you wish to hand your pointer over to someone like in a list.

    Code:
    void MyClass::dosomething()
       {
       g_list.AddToList(this);
       }
    See?

  5. #5
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    also very useful for overloaded assignment operators, eg

    Code:
    Vector3d& Vector3d::operator = ( const Vector3d& rvalue )
    {
    	for( int i = 0; i < 3; i++ )
    	{
    		triple[ i ] = rvalue.triple[ i ];
    	}
    	return *this;
    }

  6. #6
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    let's not confuse the newbie with returning a reference in an overloaded operator.

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