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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: Starter project: getopt_long in Ada
Date: Sun, 27 Nov 2011 09:21:24 +0100
Organization: Ada @ Home
Message-ID: <op.v5lityfgule2fv@douda-yannick>
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Date: 2011-11-27T09:21:24+01:00
List-Id: <comp.lang.ada>

Le Fri, 25 Nov 2011 17:39:31 +0100, Georg Bauhaus  =

<rm.dash-bauhaus@futureapps.de> a =C3=A9crit:
> package Natools.Handlers is
>
>     type Id_And_Argument_Handler
>        (Posixly_Correct :  Boolean;
>         ...)
>     is abstract tagged private;
>
>     procedure Callback
>         (Handler : in out Id_And_Argument_Handler;
>          Id : Option_Id;
>          Argument : String) is abstract;
>
>     procedure Missing_Argument
>         (Handler : in out Id_And_Argument_Handler;
>          Id : Option_Id) is null;
>
>     etc.
>
> end Natools.Handlers;
I had the same question in my mind too. I am in favor of tagged type abo=
ve  =

access to subprogram, but was thinking this was perhaps just a matter of=
  =

personal preferences. Do someone know about some on-line papers talking =
in  =

deep about tagged types vs access to subprograms ?

-- =

=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 Univer=
sity]