[Fluxus] Question (attempt 2, please ignore the previous incomplete message)

[Hugo van Galen]

Thanks Dave & Gabor for the quick replies.

Dave Griffiths wrote:

> <snip>
>

> It might be useful for you to check out structs:
>
> http://docs.racket-lang.org/reference/define-struct.html?q=define-struct#%28form._%28%28lib._racket/private/base..rkt%29._define-struct%29%29
>
> You can make fields mutable so you can set them. The reason this is
> always a made bit tricky is because the language leans heavily in the
> direction of functional programming, while not entirely forcing it on
> you.
>

This is very useful info, thanks for that link.


>
> Lists are immutable, meaning that if you want to change an element you
> need to rebuild the list each time.
>

Ahahaha, that's quite crucial to know -- if I am trying to accomplish the
impossible I can stop wondering why it does not work. :)



gabor papp wrote:

here's a small example that might help.
>
> -----
> <snip>
>
>
Wow, that really makes me wonder why I hadn't asked this list before. That
little piece of code explains a lot to me; the "map" and "for-each" were
still a bit foggy to me but that's cleared up now. In fact, I had a little
aha-erlebnis there and it felt wonderful. :-)


Again, thanks, for the enlightening responses!

Cheers,
Hugo
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.pawfal.org/pipermail/fluxus-pawfal.org/attachments/20100629/1b2b413a/attachment-0001.html>