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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Iterable container as generic parameter
Date: Sat, 27 Jan 2018 01:03:46 -0600
Organization: JSA Research & Innovation
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Xref: reader02.eternal-september.org comp.lang.ada:50174
Date: 2018-01-27T01:03:46-06:00
List-Id: <comp.lang.ada>

"Lionel Draghi" <lionel.draghi@gmail.com> wrote in message 
news:36f3a79b-0db5-4199-9a7a-cbf64058cd18@googlegroups.com...
...
>By the way, I have another question. There is no way to provide a default
> instantiation to a formal package parameter?

Not in Ada 2012 or before. There is an open issue (it is one of those that 
Emmanuel referenced in his message) to allow that. It hasn't progressed any 
significant amount at this time.

(Aside: There are a LOT of ideas submitted for Ada 2020. Many good ideas are 
likely to be left out simply because of lack of time and/or too much 
change.)

                           Randy.