From: William Elliot <mars@xx.com>
Subject: Re: Lambda calculus and it relation to LISP
Date: Tue, 8 Oct 2002 21:48:08 -0700 [thread overview]
Message-ID: <20021008214655.W89742-100000@agora.rdrop.com> (raw)
In-Reply-To: <dpOo9.1473$kW2.119394529@newssvr21.news.prodigy.com>
On Wed, 9 Oct 2002, James Wong wrote:
> > While we are on the topic of Scheme and recursion:
> > ((lambda (f n) (f f n))
> > (lambda (f n) (if (= 0 n) 1 (* n (f f (- n 1))))) 5)
> >
> > Recursion without a function actually calling itself!
>
> This was an "Extra for Experts" hw problem for us in Berkeley. I didn't get
> it, so I tip my hat to you.
>
It reduces to factorial 5.
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next prev parent reply other threads:[~2002-10-09 4:48 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-05 3:20 Lambda calculus and it relation to LISP gnuist
2002-10-05 7:51 ` Luke A. Olbrish
2002-10-05 10:46 ` William Elliot
2002-10-12 0:28 ` Alfred Einstead
2002-10-12 4:02 ` William Elliot
2002-10-05 11:44 ` David Kastrup
2002-10-09 4:38 ` James Wong
2002-10-09 4:48 ` William Elliot [this message]
2002-10-05 7:58 ` Charles Matthews
2002-10-05 8:05 ` Gareth McCaughan
2002-10-06 12:03 ` William Elliot
2002-10-06 19:22 ` Gareth McCaughan
2002-10-07 4:58 ` gnuist
2002-10-07 7:14 ` William Elliot
2002-10-07 7:37 ` Barb Knox
2002-10-07 9:34 ` David Kastrup
2002-10-07 9:59 ` William Elliot
2002-10-07 11:10 ` Barb Knox
2002-10-07 14:34 ` William Elliot
2002-10-07 10:44 ` Christian Lemburg
2002-10-08 1:02 ` ozan s yigit
2002-10-07 10:59 ` Barb Knox
2002-10-08 3:05 ` David Kastrup
2002-10-07 23:12 ` Gareth McCaughan
2002-10-07 9:54 ` William Elliot
2002-10-07 22:48 ` Gareth McCaughan
2002-10-08 8:42 ` William Elliot
2002-10-05 14:46 ` Fred Gilham
2002-10-05 16:15 ` Kaz Kylheku
2002-10-06 12:22 ` Thaddeus L Olczyk
2002-10-06 13:46 ` Joona I Palaste
2002-10-12 0:36 ` Alfred Einstead
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