On Fri, Jul 30, 2010 at 5:30 AM, Shriram Krishnamurthi <s...@cs.brown.edu>
wrote:
>
> My experience teaching Scheme beginners is that Lisp-style prefix for
> arithmetic is NOT a problem; they get the hang of it quickly. It's
> when things start to nest and parens start to add on that they start
> to get frustrated. (COND is a special pet peeve.)
If I dig through the remainder of my memory, I recall that I found COND just
a tad tricky. It was LET that I had problems with. I used to write
out the expansion
((lambda (foo bar) body) (baz x) (quux y)) and then `unexpand' it
(let ((foo (baz x))
(bar (quux y)))
body)
--
~jrm
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