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From: Robert A Duff <bobduff@world.std.com>
Subject: Re: newbie can't get exceptions to work!
Sender: bobduff@world.std.com (Robert A Duff)
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Date: Fri, 6 Apr 2001 16:43:12 GMT
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Date: 2001-04-06T16:43:12+00:00
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"Marc A. Criley" <mcqada@earthlink.net> writes:

> I was very pleased with the addition of "use type" to Ada 95, despite
> the opinion of a some that it's an ugly addition that was included
> merely to avoid having to write "renames" clauses for operators.  To me,
> not having to write such renames clauses de-clutters the code, improving
> its appearance and readability.

Not only do the renames clutter -- they are also quite error prone.

Use type is better than nothing, but even that adds one line of clutter.
IMHO, you should be able to refer to operators *anywhere*, without
having to say anything special.  You don't have to say "use" in order to
write "X := Y"; why should you have to write "use" in order to write
"if X = Y ..."?

>    SetUserObject(Top, Component_Node);
> 
> is still quite clear without qualifying the whole procedure call:
> 
>    Javax.Swing.Tree.DefaultMutableTreeNode.SetUserObject
>         (Top, Component_Node);

One compromise is to have a "use Javax.Swing.Tree;", and then say:

    DefaultMutableTreeNode.SetUserObject(Top, Component_Node);

presuming there's only one package called DefaultMutableTreeNode around
the place.

- Bob