Re: [boost] Forwarding Problem (was: [smart_ptr] operator ->*)

From: Paul Mensonides (pmenso57_at_[hidden])
Date: 2006-05-24 08:01:54

> -----Original Message-----
> From: boost-bounces_at_[hidden] 
> [mailto:boost-bounces_at_[hidden]] On Behalf Of Peter Dimov

> You don't have to change the implementation of ->* depending 
> on the smart pointer type. *p is always the dereference 
> operation, and (proxy references
> notwithstanding) &*p is always a raw pointer to the pointee. 
> get() is needed for cases when the source is NULL, but we 
> need not worry about them here, as ->* isn't allowed.

Okay.

> So:
> 
> template<class P, class M, class C> inline
> typename closure<M C::*>::type operator->*( P p, M C::* member)
> {
>     return make_closure( &*p, member );
> }
> 
> It would work for iterators, too. 

How would this affect generic code?  A use of this operator would likely be
dependent and therefore might only be found through the ADL in the second phase.

Regards,
Paul Mensonides