Re: [boost] Bind question, is there any way to implicitly go through a reference_wrapper?

From: Michael Goldshteyn (mgoldshteyn_at_[hidden])
Date: 2008-07-15 15:50:31

"Peter Dimov" <pdimov_at_[hidden]> wrote in message
news:00c501c8e6b1$b3a11f60$6607a80a_at_pdimov2...

> 

> It doesn't because of the mem_fn behavior that bind inherits. The 

> argument is not a reference to Crayon and so is assumed to be a smart 

> pointer to Crayon. mem_fn then tries to invoke get_pointer() on it to
obtain a Crayon*.

> You should be able to make it compile by adding a get_pointer overload 

> for

> reference_wrapper:

> 

> namespace boost

> {

> 

> template<class T> T* get_pointer( reference_wrapper<T> const & r ) {

>    return r.get_pointer();

> }

> 

> }

 

That would be an awesome addition, since reference_wrapper is an oft-used
part of boost and there's really no reason for it not to be automatically
traversed, making bind constructs that involve it a little simpler.

 

Thanks,

 

Michael Goldshteyn