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From: Ludovic Brenta <ludovic@ludovic-brenta.org>
Newsgroups: comp.lang.ada
Subject: Re: OO Style with Ada Containers
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Date: Thu, 15 Nov 2007 12:35:23 +0100
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braver writes:
> Ludovic -- cool!  What about the issue with the cursors operations'
> full names -- does one really have to enact `use' clauses to
> abbreviate them?

Cursor types are not tagged, therefore prefixed notation does not work
for them.  It has to be "Position := [Package_Name.]Next (Position)".
But you don't need to do that at all.

Also, you seem to imply that abbreviating cursor operations is a
design goal of yours.  I fail to understand why.  My design goals
would rather be legibility and maintainability and I very seldom use
"use" clauses.

> Can we iterate through all elements in a collection with solely
> prefix notation?

Yes, using Ada.Containers.Hashed_Sets.Iterate.  You pass an access to
a procedure to Iterate and Iterate calls your procedure once for every
element in the container, passing the cursor value.

However in the present case, I advise against iterating over any
container.  My small example uses only Find, Insert, and
Replace_Element for each word in the input file; there is no iteration
over a container.

-- 
Ludovic Brenta.