Re: [Boost-Users] Re: boost::noncopyable usage question

From: Darin Adler (darin_at_[hidden])
Date: 2002-06-05 23:57:12

On Wednesday, June 5, 2002, at 03:14 PM, Michael Davis wrote:

> According to the C++ Standard, 12.8/10, the assignment operator cannot 
> be
> inherited because if it is not provided, the compiler will provide one
> implicitly.  Or at least, that is my understanding of it.
>
> Given this, how can boost::noncopyable work?

The assignment operator provided by the compiler for the class derived 
from noncopyable has to copy the part of the object that's inherited 
from noncopyable. To do that, it has to use the assignment operator 
from the noncopyable class; but if it's inaccessible, like the private 
one in noncopyable, it has to report an error. This rule is mentioned 
in 12.8/14.

     -- Darin