Re: Template question...

From:
"Victor Bazarov" <v.Abazarov@comAcast.net>
Newsgroups:
microsoft.public.vc.language
Date:
Wed, 14 Feb 2007 23:14:44 -0500
Message-ID:
<KYCdndGyIfysQ07YnZ2dnUVZ_uWlnZ2d@comcast.com>
Ben Voigt wrote:

"Victor Bazarov" <v.Abazarov@comAcast.net> wrote in message
news:er05tl$25c$1@news.datemas.de...

Ben Voigt wrote:

OK, your suggestion is that if 'toosmall' evaluates to 'true', the
compiler should complain of two 'case' labels with the same value,
right?

And what compiler allows you to have 'toosmall' as the case label?
Not VC++. Could you actually post compilable code? Sheesh...


Did you even try it?


I did, that's why I asked. It doesn't work on VC++ 2005 (no SP).
Since you say it works with SP1, I'll take your word for it.


Can you try this one as well? Since we're interested in things that
work on real compilers, not the elusive standard-compliant ones.

template <bool ok>
inline void CompilerAssert(void)
{
       switch (true) {
               case ok:
               case false:
                       break;
       }
}

template<int Count> struct ACollectionOfThings {
  ~ACollectionOfThings() {
       CompilerAssert<Count >= 16>();
   }
};

ACollectionOfThings<20> x; // compile error with 10, no error with 20

int main(void) {}


Yes, this one works in VC++ 2005 (no SP).

V
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