Re: [boost] Re: BOOST_STATIC_ASSERT question

From: Vesa Karvonen (vesa.karvonen_at_[hidden])
Date: 2001-05-28 09:18:19

Is there a good reason to prefer a cast to "!!(expr)"?

----- Original Message ----- 
From: <bdawes_at_[hidden]>
To: <boost_at_[hidden]>
Sent: Monday, May 28, 2001 17:08
Subject: [boost] Re: BOOST_STATIC_ASSERT question

> --- In boost_at_y..., John Maddock <John_Maddock_at_c...> wrote:
> 
> > static assert now casts to bool, so any integral constant 
> expression will
> > do, provided of course that the compiler is able to handle integral
> > constant expressions correctly..
> 
> I ran your changes through the Win32 regression tests and they worked 
> on all the usual compilers.
> 
> I notice you used old-style casts rather than static_cast<>.  Was 
> that because GCC doesn't handle static_cast<> correctly?  (I tried 
> it, and it worked for the other compilers but failed for GCC with an 
> error message indicating lack of some static_cast<> support.)
> 
> Anyhow, should you add a comment indicating why you are using old 
> style casts?
> 
> --Beman