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From: =?utf-8?Q?Yannick_Duch=C3=AAne_=28Hibou57?=
 =?utf-8?Q?=29?=
 <yannick_duchene@yahoo.fr>
Newsgroups: comp.lang.ada
Subject: Re: Ada 2012: In-out parameters for functions
Date: Fri, 03 May 2013 13:42:02 +0200
Organization: Ada @ Home
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Date: 2013-05-03T13:42:02+02:00
List-Id: <comp.lang.ada>

Le Fri, 03 May 2013 12:48:29 +0200, anon <anon@anon.org> a =C3=A9crit:
> Since then one or more of Ada maintainers have decided to add number
> of "C" like syntax and/or coding to Ada. An example is the "conditiona=
l
> statements"

That's not that much specifically C=E2=80=91like. You have the same in f=
ormal  =

languages like SML where everything is an expression. That's not typical=
  =

of C, and that's not this feature which makes C unusable as soon beyond =
 =

the tiny scale.

> another is the the "C" function/procedure call with both
> having in out parameters.  A number of old "C" compilers ( 1980..1990s=

> from Microsoft and IBM ) allowed the "in out" parameters for C
> functions.

You could already have less safe hidden side effects, and as some one  =

mentioned, you could modify an argument via some indirection. In/out mak=
es  =

clear what was hidden, which is finally safer (Ada is a procedural  =

language, not a pure functional language). However, I personally still  =

miss the ability to remind in/in=E2=80=91out/out modes at the call=E2=80=
=91place, and  =

that's the main grief I have with Ada on that topic.

> Another change is the "Copy by Reference" has been replaced by
> "Copy by Type".

What is =E2=80=9Ccopy by type=E2=80=9D?

-- =

=E2=80=9CSyntactic sugar causes cancer of the semi-colons.=E2=80=9D [1]
=E2=80=9CStructured Programming supports the law of the excluded muddle.=
=E2=80=9D [1]
[1]: Epigrams on Programming =E2=80=94 Alan J. =E2=80=94 P. Yale Univers=
ity