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From: =?utf-8?Q?Yannick_Duch=C3=AAne_=28Hibou57?=
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 <yannick_duchene@yahoo.fr>
Newsgroups: comp.lang.ada
Subject: Re: Design by contract and control inversion
Date: Fri, 02 Nov 2012 13:32:05 +0100
Organization: Ada @ Home
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Date: 2012-11-02T13:32:05+01:00
List-Id: <comp.lang.ada>

Le Fri, 02 Nov 2012 09:59:53 +0100, Yannick Duch=C3=AAne (Hibou57)  =

<yannick_duchene@yahoo.fr> a =C3=A9crit:
> [=E2=80=A6]
>      package ABC.Sets.Base is
>
> [=E2=80=A6]
>      package ABC.Sets.Functional is
>

Out of the primary topic, but a tiny tip I forgot while posting the  =

excerpts (as it may be worth to people discovering Ada).

Replace the beginning of `ABC.Sets.Base`, with the following:


     package ABC.Sets.Base is

        package Formals is
           subtype Element_Type is Base.Element_Type;
           subtype Cardinal_Type is Base.Cardinal_Type;
        end Formals;


Then replace the beginning of `ABC.Sets.Functional` with the following:


     package ABC.Sets.Functional is

        package Formals is
           package Base renames Functional.Base;
        end Formals;


That's a useful tip, which will allow you to access the formal parameter=
s  =

of an instance of a generic package, whenever needed. Otherwise, as an  =

example, `Base.Cardinal_Type` won't be visible from outside of its  =

hierarchy, if ever you needed to refer to it this way. Instead of  =

`Base.Cardinal_Type` you will then do `Base.Formals.Cardinal_Type`, and =
 =

will be OK. This question used to be discussed about two years ago on th=
is  =

Usenet.


-- =

=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