>>Marc Battyani wrote:

>>>"Pascal Costanza" <costa...@web.de> wrote

>>>>I think that continuations are currently becoming more important because
>>>>they really make sense in the context of web applications. Common Lisp
>>>>vendors should start to think about adding them IMHO.

>>>I really disagree with this.
>>>First there is a really great diversity of web applications. There is
>>>absolutely nothing in common between simple web applications (like
>>>e-Commerce) and really complex ones. I think continuations can be a
>>>simplification for the simple ones but IMO they don't have real

> advantages

>>>for complex cases. (if they can handle them...)

>>Why do you think so? What is the downside of continuations for complex
>>web applications?

> It's not a problem of downside, it's a problem of not useful.

> The last web application I've written has about one hundred object classes,
> each slot in those class is modified/viewable or not according to its status,
> an the user habilitations. Several users interact simultaneously on the same
> objects. They can modify and annotate them. The modifications done by one
> user are sent back to the other users browsers. When a user makes
> modifications that disable/enable the access to slots or functions for
> himself or other users, their views change automatically. The objects as
> saved/retrieved in an SQL database.
> The state management for this would be a nightmare.

> Now, how many lines of code for this HTML user interface? Zero. All is
> handled by my framework.