From: anon@att.net
Subject: Re: If a routine should return two results, how should it be done?
Date: Sun, 27 Jul 2014 11:59:28 +0000 (UTC)
Date: 2014-07-27T11:59:28+00:00 [thread overview]
Message-ID: <lr2piv$ec2$1@speranza.aioe.org> (raw)
In-Reply-To: lr0qb7$549$1@speranza.aioe.org
You forgot one:
2.A function with one or more "in" argument(s) that are pointers.
1. Procedure is the normally way to handle "out" arguments in all
Ada. And as of Ada 2012 it just one way.
2. As for the function with or or more "out" arguments. The only
advantage is for interfacing to C routines and libraries.
Else, it not very useful. One reason is in some cases the
compiler can generate more code to handle the new function
design then a procedure.
2.A. As for function with one or more "in" pointer type of argument(s),
it just bad programming and the compiler should check and report
is design as an error.
3. As for result being a record type. It just a standard result of
some function.
In <lr0qb7$549$1@speranza.aioe.org>, Victor Porton <porton@narod.ru> writes:
>If a routine should return two results, how should it be done?
>
>1. procedure with two out arguments;
>
>2. function with one out argument;
>
>3. create specific record type for the result type of the function?
>
>What are advantages and disadvantages of each variant?
>
>--
>Victor Porton - http://portonvictor.org
prev parent reply other threads:[~2014-07-27 11:59 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-26 18:00 If a routine should return two results, how should it be done? Victor Porton
2014-07-26 18:53 ` Niklas Holsti
2014-07-26 18:57 ` Victor Porton
2014-07-26 19:21 ` Peter Chapin
2014-07-26 19:37 ` Dan'l Miller
2014-07-26 20:10 ` Shark8
2014-07-26 20:42 ` Victor Porton
2014-07-26 20:44 ` Victor Porton
2014-07-27 11:59 ` anon [this message]
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