From: "Paul Steckler" <steck@stecksoft.com>
To: "'Richard Jones'" <rich@annexia.org>, <caml-list@inria.fr>
Subject: RE: [Caml-list] How to find out if a function is tail recursive?
Date: Thu, 12 Jun 2003 10:31:14 -0400 [thread overview]
Message-ID: <000201c330ef$473ea270$0264a8c0@blimpy> (raw)
In-Reply-To: <20030612141549.GA14762@redhat.com>
> let rec range a b =
> if a > b then []
> else a :: range (a+1) b
> ;;
>
> let list = range 1 1000000;;
>
> Printf.printf "length = %d\n" (List.length list);;
>
> Can you tell me why this function isn't tail recursive, and
> share any useful tips on how to tell whether a function is or
> is not tail recursive?
The recursive call to range is not the result for its
caller. Instead, the result of recursive call is
an argument to the cons (the :: operator).
-- Paul
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next prev parent reply other threads:[~2003-06-12 14:31 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 [this message]
2003-06-12 14:43 ` Luc Maranget
2003-06-12 16:15 ` John Max Skaller
2003-06-12 16:37 ` John Max Skaller
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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