From: Oleg <oleg_inconnu@myrealbox.com>
To: caml-list@inria.fr
Subject: [Caml-list] Why is (@) written in O'Caml?
Date: Thu, 5 Dec 2002 15:47:09 -0500 [thread overview]
Message-ID: <200212051547.09337.oleg_inconnu@myrealbox.com> (raw)
let rec (@) l1 l2 =
match l1 with
[] -> l2
| hd :: tl -> hd :: (tl @ l2)
The O'Caml implementation of (@) is recursive and not tail-recursive. All one
really has to do during "append" is copy l1 and set the last element's CDR to
l2. I can see why this can not be done in O'Caml itself, but since (@) is
such a common operation, I'm wondering why it was decided to implement it
inefficently in O'Caml itself?
Cheers,
Oleg
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next reply other threads:[~2002-12-05 20:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-05 20:47 Oleg [this message]
2002-12-05 21:16 ` Pal-Kristian Engstad
2002-12-05 21:24 ` Oleg
2002-12-05 21:55 ` Pal-Kristian Engstad
2002-12-05 23:27 ` Oleg
2002-12-05 23:53 ` Pal-Kristian Engstad
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