Pass by reference

[vermarajeev]

How to force a class to pass by reference like how java does
(using C++)??

Thanks

[jpn]

This article should make it clear. Feel free to ask if still in doubt.

[vermarajeev]

This article should make it clear. Feel free to ask if still in doubt.

Hello jpn,
You didnt get me.

Let me explain...
-->in normal C++

class A
{
  .....
};
void func( A &a )  //Is passed by reference
{
 
}
int main()
{
   A a;
   func( a );
   return 0;
}

class A
{
  .....
};
void func( A &a )  //Is passed by reference
{

}
int main()
{
   A a;
   func( a );
   return 0;
}

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-->What I want???

class A
{
  .....
};
void func( A a )  //should be forced to pass by reference always. This happens in java 
{
 
}
int main()
{
   A a;
   func( a );
   return 0;
}

class A
{
  .....
};
void func( A a )  //should be forced to pass by reference always. This happens in java 
{

}
int main()
{
   A a;
   func( a );
   return 0;
}

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[jpn]

As far as I know there is no other way around. "A &a" is how you do it in C++.

[vermarajeev]

As far as I know there is no other way around. "A &a" is how you do it in C++.

That is fine, but I need to make my class smart enough to provide such functionality. Is there some way I can implement my class like that???

Thanks

[marcel]

What do you mean?
You just pass the parameter by reference...

[jacek]

I need to make my class smart enough to provide such functionality.

This is counter intuitive in C++ and might lead to mistakes and confusion, but if you really want it, just implement data sharing class without copy-on-write mechanism (AFAIR it's called a single state class).