From: Quentin Ochem <qochem@gmail.com>
Subject: Re: Anouncement: OpenGL Binding w/ Ada-2012.
Date: Wed, 24 Oct 2012 09:32:20 -0700 (PDT)
Date: 2012-10-24T09:32:20-07:00 [thread overview]
Message-ID: <1dd4109c-1190-4d51-ae57-d171a4d50f41@googlegroups.com> (raw)
In-Reply-To: <277d0e8f-6b00-44e9-8d1f-1d25007fcc72@googlegroups.com>
> If you do give it a try, feel free to post impressions, ideas, suggestions.
One suggestion: there's a number of cases where pre conditions can be replaced by proper subtyping, e.g.:
procedure PointSize (size : float)
with pre => not Executing AND size > 0.0;
Can be replaced by:
subtype Positive_Float is Float range 0.0 .. Float'Last;
procedure PointSize (size : Positive_Float)
with pre => not Executing;
It seems good practice to use subtyping whenever possible, in particular if it's a property of a parameter, and let Pre condition for more complex properties related to the subprogram as a whole.
Just my 2 cents...
next prev parent reply other threads:[~2012-10-24 16:32 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-18 17:16 Anouncement: OpenGL Binding w/ Ada-2012 Shark8
2012-10-24 3:38 ` joel.s.williamson
2012-10-24 20:33 ` Shark8
2012-10-24 16:32 ` Quentin Ochem [this message]
2012-10-24 20:40 ` Shark8
2012-10-25 22:22 ` Quentin Ochem
2012-10-26 1:46 ` Shark8
2012-10-26 13:50 ` Yannick Duchêne (Hibou57)
2012-10-27 1:56 ` Shark8
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox