From: jehenrik <jehenrik@yahoo.com>
To: Yutaka OIWA <oiwa@yl.is.s.u-tokyo.ac.jp>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] camlp4: ONCE construct
Date: Fri, 10 Jan 2003 20:23:16 -0500 [thread overview]
Message-ID: <42D8BD95-2503-11D7-B29E-00039375801A@yahoo.com> (raw)
In-Reply-To: <vfifzs0zl80.fsf@tuba.is.s.u-tokyo.ac.jp>
> See an article by Francois Pottier at
> http://caml.inria.fr/archives/200107/msg00187.html
> for (almost direct) answer.
Well, for my original question, consider the choice of regular
expression compilation to be an arbitrary task. The only point is that
it be computationally expensive. I have wanted the same thing in
completely different contexts.
Jeff Henrikson
jehenrik> Hi,
jehenrik> I would like to write a Camlp4 construct which causes its
argument to
jehenrik> only be evaluated once. Eg:
jehenrik> ...
jehenrik> ...
jehenrik> ...
jehenrik> ONCE Pcre.regexp "([0-9]+)"
jehenrik> would be transformed to:
jehenrik> let gensym000 = Pcre.regexp "([0-9]+)";;
jehenrik> ...
jehenrik> ...
jehenrik> ...
jehenrik> gensym000
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prev parent reply other threads:[~2003-01-11 1:23 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-10 19:14 jehenrik
2003-01-10 22:35 ` Yutaka OIWA
2003-01-11 1:23 ` jehenrik [this message]
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