From: Martin <martin.dowie@btopenworld.com>
Subject: Re: Simple Warnings Needs
Date: Wed, 23 Feb 2011 13:55:54 -0800 (PST)
Date: 2011-02-23T13:55:54-08:00 [thread overview]
Message-ID: <8b826007-6846-4477-a6e0-91ad08b32bc7@p12g2000vbo.googlegroups.com> (raw)
In-Reply-To: 8aaf3582-0cc1-4c5f-ab85-eeb7ba569d9e@glegroupsg2000goo.googlegroups.com
On Feb 23, 6:52 pm, Rego <pablo.r...@embraer.com.br> wrote:
> ** "-gnatwk" (Variables that could be constants)
A rationale behind this one is that by explicitly declaring items as
constants you can prevent _accidental_ modification. It's also a nice
visual queue to a reader that the value is deliberately set once and
once only, or they are left to wonder why a variable is defined and
set once but never again - is that a bug?
I seem to remember an article by Dewar explaining why constants can
rarely be optimized but I can't put my finger on it at the moment...
HTH
-- Martin
next prev parent reply other threads:[~2011-02-23 21:55 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-23 18:52 Simple Warnings Needs Rego
2011-02-23 19:56 ` mockturtle
2011-02-23 23:07 ` jpwoodruff
2011-02-23 20:06 ` Ludovic Brenta
2011-02-23 21:55 ` Martin [this message]
2011-02-24 8:26 ` Markus Schöpflin
2011-02-26 3:51 ` Rego
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