From: John McCabe <john@nospam.assen.demon.co.uk.nospam>
Subject: Re: Lack of formal syntax undermines Ada
Date: Fri, 11 Apr 2008 23:37:53 +0100
Date: 2008-04-11T23:37:53+01:00 [thread overview]
Message-ID: <i0qvv3dev17eh98a6bpunaf0ur5o8d33tc@4ax.com> (raw)
In-Reply-To: wccmyo0awws.fsf@shell01.TheWorld.com
Robert A Duff <bobduff@shell01.TheWorld.com> wrote:
>John McCabe <john@nospam.assen.demon.co.uk.nospam> writes:
>
>> As I understand it, that was deliberate; Ada's feature that functions
>> may not have side-effects ...
>
>Ada functions can have side effects.
Bugger - where did I get that idea from then (have to admit, it's been
a while since I paid a lot of attention to Ada!)
>>...means that whether Y is a function or an
>> array is irrelevant to the user as long as the result is valid. It is
>> also related to the separation of interface from implementation. Write
>> the implementation as an array to start with, e.g. for unit test
>> purposes, then it can be replaced with a function without having to
>> change the client who uses this interface.
>
>Right, that's the theory. But it only works for some functions, and
>some arrays.
Of course, but in principle....
Thanks Bob
next prev parent reply other threads:[~2008-04-11 22:37 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-11 9:41 Lack of formal syntax undermines Ada usenet
2008-04-11 11:20 ` Peter C. Chapin
2008-04-15 12:57 ` usenet
2008-04-16 2:26 ` Peter C. Chapin
2008-04-16 3:14 ` Eric Hughes
2008-04-17 6:37 ` Randy Brukardt
2008-04-11 17:27 ` Georg Bauhaus
2008-04-11 18:13 ` Adam Beneschan
2008-04-11 21:25 ` John McCabe
2008-04-11 21:45 ` Robert A Duff
2008-04-11 22:37 ` John McCabe [this message]
2008-04-11 23:08 ` Adam Beneschan
2008-04-12 7:16 ` Dirk Craeynest
2008-04-14 7:23 ` Jean-Pierre Rosen
2008-04-12 12:57 ` Robert A Duff
2008-04-12 15:06 ` (see below)
2008-04-12 16:25 ` John McCabe
2008-04-12 17:55 ` (see below)
2008-04-12 22:19 ` John McCabe
2008-04-13 1:13 ` (see below)
2008-04-13 11:51 ` John McCabe
2008-04-13 14:13 ` (see below)
2008-04-13 19:34 ` John McCabe
2008-04-13 20:51 ` (see below)
2008-04-13 21:06 ` John McCabe
2008-04-12 17:16 ` Gary Scott
2008-04-12 18:43 ` Peter C. Chapin
2008-04-12 19:16 ` Gary Scott
2008-04-12 20:04 ` Robert A Duff
2008-04-12 23:32 ` Gary Scott
2008-04-13 1:16 ` Robert A Duff
2008-04-12 20:02 ` Robert A Duff
2008-04-12 20:52 ` Pascal Obry
2008-04-13 22:01 ` Florian Weimer
2008-04-13 9:46 ` anon
2008-04-15 13:22 ` usenet
2008-04-15 16:08 ` Adam Beneschan
2008-04-13 22:04 ` Florian Weimer
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