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From: Jeffrey Carter <jeffrey.carter@boeing.com>
Subject: Re: Static assertions
Date: Fri, 18 May 2001 16:15:58 GMT
Date: 2001-05-18T16:15:58+00:00	[thread overview]
Message-ID: <3B054ABE.9B3DA459@boeing.com> (raw)
In-Reply-To: wcc7kzeu69k.fsf@world.std.com

Robert A Duff wrote:
> 
> What I meant was that it's better style to use a qualfied expression
> than a type conversion, in cases where both work, because a qual exp is
> less powerful.  That is, why say "Warning Will Robinson: I'm converting
> types" when you're *not* converting types?

Isn't that "Danger, Will Robinson"?

I certainly agree with this advice. One thing that always stopped me
short in my tracks was code with constructs such

   ... + My_Type (3) - ...

apparently written by people who thought that "3" has type Integer (or
perhaps used a compiler with that "feature").

However, is there any reason to write

   Assert_1 : constant := Boolean'Pos (Assert'(Integer'Size = 73) );

rather than

   Assert_1 : constant Assert := Integer'Size = 73;

? Are there compilers that won't check this during compilation?

-- 
Jeffrey Carter



  reply	other threads:[~2001-05-18 16:15 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-05-18  5:34 Static assertions Christoph Grein
2001-05-18 13:38 ` Robert A Duff
2001-05-18 16:15   ` Jeffrey Carter [this message]
2001-05-18 17:25     ` Ted Dennison
2001-05-18 21:27     ` Robert A Duff
2001-05-18 22:46       ` Jeffrey Carter
2001-05-19 22:53         ` Robert A Duff
  -- strict thread matches above, loose matches on Subject: below --
2001-05-17 15:07 Jean-Pierre Rosen
2001-05-17 17:44 ` Jeffrey Carter
2001-05-17 19:09   ` Marin David Condic
2001-05-17 22:34     ` Jeffrey Carter
2001-05-18 13:39       ` Marin David Condic
2001-05-18  1:23 ` Robert A Duff
2001-05-19  7:40 ` David Kristola
2001-05-19 22:56   ` Robert A Duff
2001-05-19  8:36 ` Aaro Koskinen
2001-05-21  7:50   ` Jean-Pierre Rosen
2001-06-12  3:59     ` David Thompson
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