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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: issue with implementing a visitor design pattern
Date: 17 Jan 2004 16:24:52 -0500
Organization: The World Public Access UNIX, Brookline, MA
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"Robert I. Eachus" <rieachus@comcast.net> writes:

> The much deeper problem you have is that the Visitor pattern is a waste
> of effort in Ada.  Not wrong, or unimplementable, but the pattern as
> such is much heavier weight than it needs to be.

I agree.  In fact, I'd say "visitor" is my least favorite design pattern
of the ones in the Gamma et al book.  "Visitor" has all the
disadvantages of a case statement (over dispatching calls),
with none of the advantages!

- Bob