Re: [boost] scoped_ptr deleter

Subject: Re: [boost] scoped_ptr deleter
From: Dmitry Goncharov (dgoncharov_at_[hidden])
Date: 2009-09-16 02:46:01

Andrey Semashev wrote:
> Noncopyable nature doesn't mean its type is insignificant. This change 
> would break the interface as the following code won't work anymore:
>
>   template< template< typename > class Ptr >
>   void make_a(Ptr< A >& p);
>
>   scoped_ptr< A > p;
>   make_a(p);
>
> This may not be the most frequent use pattern but nonetheless it's valid.
>
> I'd opt for this change if it wouldn't affect the interface in the 
> breaking way. Otherwise, I like the way it is.
>
The difficulty that your example demonstrates is caused by the nature of 
template template parameters. scoped_ptr should not be blamed for that.

BR, Dmitry