[boost] Re: Re: [review results] hash functions accepted

From: Thorsten Ottosen (nesotto_at_[hidden])
Date: 2005-03-23 12:15:14

"Jonathan Wakely" <cow_at_[hidden]> wrote in message 
news:20050323165335.GA52151_at_compsoc.man.ac.uk...
| On Wed, Mar 23, 2005 at 04:06:09PM +0000, Joaquin M Lopez Munoz wrote:
|
| > "I can't think of any way that this extension could
| > break a conforming program, considering that users
| > are not permitted to forward-declare standard
| > library components"
| >
| > Is this really so? Why cannot I forward declare a
| > stdlib component?
|
| Opening namespace std for anything except specialisations of standard
| library templates (with user-defined types as parameters) is illegal.

yes, but why?

-Thorsten