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Newsgroups: comp.lang.ada
Subject: Re: default formal parameters in generic declarations
References: 
 <9b3bac4d-5ae1-4a1b-a81e-9aa9ae1843e0@e31g2000hse.googlegroups.com>
From: Stephen Leake <stephen_leake@stephe-leake.org>
Date: Mon, 03 Mar 2008 07:42:40 -0500
Message-ID: <u1w6sm11b.fsf@stephe-leake.org>
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Date: 2008-03-03T07:42:40-05:00
List-Id: <comp.lang.ada>

Eric Hughes <eric.eh9@gmail.com> writes:

> I would like to implement this in Ada, but the absence of a default
> package parameter means that instantiation is horribly clunky and that
> only the most dedicated would use it.

I don't see why this would be "horribly klunky"; they typical user
will do:

package My_Instance is new Generic_Package 
    (Aspect_Package => Null_Aspect_Package,
     foo => Bar,
     ...);

You are requesting the ability to do this instead:

package My_Instance is new Generic_Package 
    (foo => Bar,
     ...);

I agree it's a little nicer, but that big a deal.

-- 
-- Stephe