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From: "Pascal Obry" <pascal.obry@der.edfgdf.fr>
Subject: Re: generic binary tree in ada 83
Date: 1998/04/29
Message-ID: <6i6idu$2ib$1@cf01.edf.fr>#1/1
X-Deja-AN: 348660591
References: <35461333.6DFB@westcott.force9.co.uk> <6i55q1$nfe@top.mitre.org>
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Organization: EDF - Direction des Etudes et Recherches
Newsgroups: comp.lang.ada
Date: 1998-04-29T00:00:00+00:00
List-Id: <comp.lang.ada>


Michael F Brenner a �crit dans le message <6i55q1$nfe@top.mitre.org>...
>   > I have it working on a single character, but cannot get
>   > it to work on generic data.
>
>Just add the following lines on top of your package that implements
>the Tree data structure on type character:
>
>    generic
>        type character is private;
>
>and it will work on generic data. To instantiate it, use the following
>code:
>      package tree_of_limbs is new character_tree (character => limbs);
>
>Then it will work on TYPE LIMBS exactly as it worked on type character.
>
>The operational thing here, is that you already have it working on
>a single character. If you did not, then you could not re-use the
>code, since the code does not work. But since you have the code
>working on one type, it is often trivial to re-use it on other types
>in the Ada programming lanaguage.
>

I'am not really sure this solution will work. How do you know that Karen did
not
make use of the fact that the binary tree contain character ?

Also the use of the predefined type Character here is not elegant at all !

Pascal.

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