From: John Max Skaller <skaller@ozemail.com.au>
To: caml-list@inria.fr
Subject: Re: [Caml-list] How to find out if a function is tail recursive?
Date: Fri, 13 Jun 2003 02:37:50 +1000 [thread overview]
Message-ID: <3EE8AC5E.6080409@ozemail.com.au> (raw)
In-Reply-To: <3EE8A73A.3020207@ozemail.com.au>
John Max Skaller wrote:
> let rec count lst =
> match lst with
> | [] -> 0
> | h :: t -> 1 + count t
>
> which isn't tail recursive.
BTW: to see the last line spoils the tail
recursion, rewrite it in functional notation:
| h ::t -> add(1, count(t))
and you can now see that 'add' is the tail call,
not count.
--
John Max Skaller, mailto:skaller@ozemail.com.au
snail:10/1 Toxteth Rd, Glebe, NSW 2037, Australia.
voice:61-2-9660-0850
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next prev parent reply other threads:[~2003-06-12 16:37 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-12 14:15 Richard Jones
2003-06-12 14:31 ` Paul Steckler
2003-06-12 14:43 ` Luc Maranget
2003-06-12 16:15 ` John Max Skaller
2003-06-12 16:37 ` John Max Skaller [this message]
2003-06-13 7:23 ` [Caml-list] This is so nice John Max Skaller
2003-06-12 14:37 ` [Caml-list] How to find out if a function is tail recursive? Wolfgang Müller
2003-06-12 14:49 ` Neel Krishnaswami
2003-06-12 15:14 ` Chris Uzdavinis
2003-06-12 15:33 ` Brian Hurt
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