From: David Reitter <david.reitter@gmail.com>
Cc: anton.belyaev@gmail.com
Subject: Re: to big nest level of recursion
Date: Tue, 21 Mar 2006 21:31:29 +0000 [thread overview]
Message-ID: <0E851319-E5C4-4617-872F-29459A5970BB@gmail.com> (raw)
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> 2) Pascal Bourguignon mentioned TCO. Is it relatively right recursion
> handling? Why does it works only with boolean expressions? I thought
> that it is enougth to make recursive call the last in the expression
> (as it is in Haskell). Where can I read about it?
TCO = tail call optimization, just what you were referring to.
In Prolog, I'd formulate the algorithm just like you did. In elisp,
you can't, because stack size is small and there is obviously no TCO.
http://en.wikipedia.org/wiki/Tail_recursion
Maybe it's a consolation for you that for every recursive algorithm,
you can formulate an iterative version. And you don't bloat a call
stack when you do so.
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next reply other threads:[~2006-03-21 21:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-21 21:31 David Reitter [this message]
[not found] <mailman.21.1142976703.14011.help-gnu-emacs@gnu.org>
2006-03-25 10:30 ` to big nest level of recursion Alan Mackenzie
2006-03-25 11:46 ` David Kastrup
2006-04-04 13:36 ` david.reitter
-- strict thread matches above, loose matches on Subject: below --
2006-03-20 12:35 Anton V. Belyaev
2006-03-20 12:45 ` Hans-Christoph Wirth
2006-03-20 12:51 ` David Kastrup
2006-03-20 13:52 ` Pascal Bourguignon
2006-03-20 15:56 ` Anton V. Belyaev
2006-03-21 17:09 ` Stefan Monnier
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