&&& BIG Problem In Operator Overloading &&&

[amiref]

Hello Everybody
I Have A Question .

Suppose That We Have This Class :

/////////////////////////////////////////////////////////////////////////////
class StringClass
{
public:
...
void someProcessing( );
...
StringClass& operator=(const StringClass& rtSide);
...
private:
char *a;//Dynamic array for characters in the string
int capacity;//size of dynamic array a
int length;//Number of characters in a
};


/////////////////////////////////////////////////////////////////////////////

In Line That I Overload "=" , Why We Use " & " In Two Place :
1 - After Return Type Of Function ( After StringClass ).
2 - In Argument Of Function .

Please Help Me .

[firedraco]

http://www.cplusplus.com/doc/tutorial/functions2/

[amiref]

Hi Firedraco
Somthing that you tell me is not usefull. I Want Someone Scientificly Answer To My Question .
Tnx

[Skillless]

Scientific research has concluded that to answer that question one must read the tutorial that firedraco posted.
(I am a professional scientist professor doctor)


PS.
Stop Capitalizing The First Character Of Every Word You Type
Scientific Research Has Concluded It Is Incredibly Annoying

[amiref]

In that post that firedarco said , there is not answer of my first question.
pls help me.

[Skillless]

Yes, the answer is there, the first paragraph explains exactly what an " & " is used for.

[z05DSL3A]

In Line That I Overload "=" , Why We Use " & " In Two Place :
1 - After Return Type Of Function ( After StringClass )

A reference is returned by the assignment operator. This is to allow operator chaining.

[amiref]

Very thanks Grey Wolf for your good answer , but I have another question :
Why When we want operator chaining , we use from reference ?

[z05DSL3A]

The following should be of help:
http://www.parashift.com/c++-faq-lite/references.html

[amiref]

I have question in that link that Grey Wolf said in above topic :
Which feature of reference operator (&) enable us to use from that to make operator chaining ?