On 8/30/07, jerzy.karczmarczuk@info.unicaen.fr wrote:

Dan Piponi writes:

...

In Haskell, there is no box.

Well, there are boxes... But there also thunks and latent, yet-unevaluated graphs...

But the point of Haskell is to provide an abstraction that hides these details from you. (Though ultimately it's a leaky abstraction and there comes a point where you do need to know about these things.)

Anyway, I believe strongly that ALL people who have problems with the Haskell protocole, and they are numerous, I teach a good sample of them, should be encouraged to learn Prolog.

I'd second that. It's hard to see the difference between declarative and imperative programming when you only have one instance of a declarative language from which to generalise. -- Dan