Redeclaration a member function

[Quentin]

Hi there!

I'd like to know why I can't redeclare a member function ( http://msdn.microsoft.com/en-us/library/48c0x0f6%28VS.80%29.aspx ).

For example, this code:

class TTT
{
   void fun();
   void fun()    // <---- Redeclaration !!!
   { }
};

//----------------------

class AAA
{
   void fun();
};

void AAA::fun()
{ }
void AAA::fun(); // <---- Redeclaration !!! 

is incorrect...

But why is that ? In the case of normal functions, a redeclaration doesn't matter...

[helios]

I can't come up with an answer, but, why would you ever need to do that?

[Disch]

Because it doesn't make any sense.

Redeclaring would unnecessary duplicate code. That's bad for several reasons. (Maintainability reasons, mostly)

I suspect the only reason it's allowed for global functions is to retain compatibility with C, which is less strict about things like that.