Subject: Re: scheme is supposed to help me concentrate on concepts...why is it so WEIRD?!
From: (Rob Warnock)
Date: 1996/04/27
Newsgroups: comp.lang.scheme
Message-ID: <4lsktu$>

Andrew J Steinbach <> wrote:
| 	Some people have pointed out to me in e-mail that vectors would
| be a better choice for a 2D array.  However, if I had a banded matrix,
| and didn't want to spend the time implementing banded matrix efficiency
| algorithims, I'd still have to "fill in the blanks" with 0's in Scheme.

So?  (make-vector 1000 0) gives you a vector of 1000 zeros. And if the vector
was handed to you from somewhere else, just use (vector-fill! {vec} 0).

| 	As far as a good book goes, can you suggest one?  Our text is SICP,
| which is good with concepts, but not so much with examples.

Ah! It might help to be using an R4RS Scheme...

I've just recently read Kent Dybvig's "The Scheme Programming Language
(2nd edition)", and consider its examples quite nice. [There were a
couple I found *immediate* use for!]

I also liked the order of presentation, which is at times a bit weird, but
it makes things fit together better. E.g., Lots of elaboration on details
of lambdas before even introducing conditionals or recursion. Or, "define-
syntax" & "syntax-rules" are introduced quite early, in the first third of
the book, instead of towards the end. But this means that he could use
"define-syntax" to give a more formal definition of the derived forms in
terms of the essential forms.

[For you C programmers: The book doesn't quite feel like a "K&R" of Scheme;
more like a "Harbison & Steel" of Scheme, if you get what I mean...]


Rob Warnock, 7U-550
Silicon Graphics, Inc.
2011 N. Shoreline Blvd.		Phone: 415-933-1673  FAX: 415-933-0979
Mountain View, CA  94043	PP-ASEL-IA

Note: New mailstop & FAX numbers. (April 1996)