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From Ovidiu Predescu <>
Subject Re: [Schecoon] flow control layer
Date Wed, 27 Feb 2002 22:10:09 GMT
On Wed, 27 Feb 2002 11:21:28 +0300, "Piroumian, Konstantin" <>

> Thanks for a wonderful lecture. Now I understand why Scheme language
> is used and why people love/will love it. But all that is possible
> with other means too, although it will require implementing
> something similar to continuations concept. (We have something like
> that, see my response to Berin's critics).  Anyway, continuations
> concept is a great idea and I'm going to like it ;)

Yes, it is possible, it is called continuation passing style. Read
Maciek's message for an example of how it can be achieved.

> > > I'm not a newbie in Cocoon, but even I am tired of revolutionary
> > > changes in it (C1 - C2 - .. - [C2 + Schecoon - Actions]), lack of
> > > documentation, etc. and it's going to be very hard to convience
> > > other people even to try it.
> >
> > I actually like changes, even though a really good friend of mine
> > keeps saying "change is bad" ;-) They make the life more exciting, if
> > properly plan for them.
> >
> I prefer evolutionary but not revolutionary changes. After I've been
> migrating our application from C1 to C2 I started to hate changes ;)

;-) I understand where you're coming from.

> Btw, because of difficulties and required too much time to migrate from C1
> to C2 our project architects decided to switch to a more standard and stable
> technology, like JSP (and Struts). That's why we don't use Cocoon anymore. I
> think that our case is not unique.

Hm, that's sad. But I guess this is an indication we need better
documentation and examples. It also takes a lot of time for a
technology to mature, until all the rough edges are rounded.

> > I hope the description I gave above provides a gentle enough
> > introduction to continuations.
> Yes, it was quite clear. It worth at least to be placed in a readme file in
> Schecoon directory.

All right, I'll add it in there.

> > Schecoon will not preclude you from using the concepts so familiar to
> > you today. Schecoon is yet another sitemap implementation, which you
> > can mount from either the compiled or interpreted versions. If you
> > don't need flow control, you don't need to use it. But as you become
> > familiar with it, you will be able to switch back and forth between
> > implementations.
> Ok. I'll look at it when there will be a sample.

I'll let you know when there's something to see.

> Thank you for your time.

You're welcome!

Best regards,
Ovidiu Predescu <> (GNU, Emacs, other stuff)

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