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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: Proposed change to BC iterator parameters
Date: 19 Dec 2003 17:51:15 -0500
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:

> But Robert wants it in a non-OO way! I think that he's right. The language
> should support both procedural and OO approaches, for they are
> complimentary.

I'm not sure why you call the cursor style "OO".  But yes, both styles
are useful.

What I *really* want is that the iterator can be written in whichever
style is appropriate, and easily *used* in either style.  Converting the
downward closure style to what you call the OO style (which I call the
cursor style) requires language support for coroutines, or something
very much like coroutines.

You can simulate coroutines using tasks and protected objects, but the
syntax is over-the-top heavy.  Not to mention the inefficiency.

- Bob