Comments on: SICP section 4.3.1

By: kenjin

kenjin — Wed, 16 Jan 2008 09:50:15 +0000

Oh, b should be bigger than a
then it should probably be something like
(let ((b (an-integer-between 1 c)))
…(let ((a (an-integer-between 1 b)))
.
.
I don’t know how to delete my postings
It’s totally ok to erase them all.

By: kenjin

kenjin — Wed, 16 Jan 2008 09:40:14 +0000

(let ((c (an-integer-from 1)))
….(let ((a (an-integer-between 1 c))
………..(b (an-integer-between 1 c)))
……..(require (= (* c c) (+ (* a a) (* b b))))
……..(list a b c)))

dots are spaces…still ugly though.

By: kenjin

kenjin — Wed, 16 Jan 2008 09:31:39 +0000

Oh, spaces at the beginning of each sentence didn’t show up.
sorry it’s ugly to read.

By: kenjin

kenjin — Wed, 16 Jan 2008 09:29:09 +0000

for exercise 4.36, how about this?

(let ((c (an-integer-from 1)))
(let ((a an-integer-between 1 c))
(b an-integer-between 1 c)))
(require (= (* c c) (+ (* a a) (* b b))))
(list a b c)))