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From: =?utf-8?Q?Yannick_Duch=C3=AAne_=28Hibou57?=
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Newsgroups: comp.lang.ada
Subject: Re: Ada 2012: In-out parameters for functions
Date: Sun, 05 May 2013 21:23:21 +0200
Organization: Ada @ Home
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Date: 2013-05-05T21:23:21+02:00
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Le Sun, 05 May 2013 17:09:11 +0200, Niklas Holsti  =

<niklas.holsti@tidorum.invalid> a =C3=A9crit:
> I believe I have made some Ada coding errors that would have been
> revealed by mode notations in calls. I don't remember the exact
> examples, but I think one concerned a procedure in which an "in"
> parameter was changed to an "in out" parameter, because some new uses =
of
> the subprogram required it -- but then some old uses no longer worked,=

> because they assumed that the actual for this parameter would not be
> changed. And the actual was a non-constant object, so the compiler saw=

> nothing wrong in its use for an in-out parameter.

That's an argument for Randy's idea to make constant the default mode fo=
r  =

local variable and constant declarations.


-- =

=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