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Newsgroups: comp.lang.ada
Date: Thu, 14 Sep 2017 02:49:42 -0700 (PDT)
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Subject: Re: use Ada.Text_IO in main() or Package?
From: gautier_niouzes@hotmail.com
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Xref: news.eternal-september.org comp.lang.ada:48127
Date: 2017-09-14T02:49:42-07:00
List-Id: <comp.lang.ada>

Le jeudi 14 septembre 2017 11:37:41 UTC+2, Mace Ayres a =C3=A9crit=C2=A0:
> Tks. It does make sense. I haven't been programming much in last decades,=
 never really go into OOP much, but I can see this is going to avoid a lot =
of issues, and enforces some rigor.

Actually it is just a question of what is depending on what.
Instead of Structures, you can take Ada.Text_IO itself as an example.
In the guts of package Ada.Text_IO, the GNAT run-time library has a package=
 body file: a-textio.adb) with the following lines:

    with Ada.Streams;             use Ada.Streams;
    with Interfaces.C_Streams;    use Interfaces.C_Streams;

    with System.File_IO;
    with System.CRTL;
    with System.WCh_Cnv;          use System.WCh_Cnv;
    with System.WCh_Con;          use System.WCh_Con;

    with Ada.Unchecked_Conversion;
    with Ada.Unchecked_Deallocation;

It makes sense they are there and not expected to be in any Main() or any o=
ther referencing Ada.Text_IO.
I've never used System.File_IO for instance and would not: it is GNAT only =
and unknown in other Ada systems. And there is no need for that.
G.