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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: What would you like in Ada202X?
Date: Mon, 30 Apr 2012 10:27:06 +0200
Organization: Ada @ Home
Message-ID: <op.wdkkfgrbule2fv@douda-yannick>
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Date: 2012-04-30T10:27:06+02:00
List-Id: <comp.lang.ada>

Le Mon, 30 Apr 2012 08:40:00 +0200, Michael Rohan <michael@zanyblue.com>=
 a  =

=C3=A9crit:
> Here's another suggestion that will probably upset some people but it'=
s
> something I've run into with generated code: it would be nice to have =
a
> more general "separate" (I seem to remember a posting on this thread  =

> about
> how "separate" was bad!).  What I think would be somewhat useful would=
 be
> to allow separate definitions of initializations, e.g.,
>
>     type Integer_List is array (Positive range <>) of Integer;
>     My_Data : constant Integer_List :=3D (1, 2, 3, 4);
>
> If the data used to do the initialization is OS dependent, or otherwis=
e
> generated, it might be nice to do
>
>     My_Data : constant Integer_List separate;
>
> The separate source could then contain just the generated/OS dependent=

> data.

As a practical alternative, you can define per=E2=80=91platform bodies, =
and turn  =

the constant into a pure function, whose implementation belongs to the  =

body. Otherwise, if the matter is that your package interface is to  =

explicitly expose platform specific definitions, then that suggest your =
 =

interface is a platform interface, and you may rely on child packages, o=
ne  =

for each platform. In any case, universal and platform specific  =

definitions, should not be mixed, that leads to lack of clarity and  =

maintenance troubles.

-- =

=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