From: Stefan Monnier <monnier@iro.umontreal.ca>
To: caml-list@yquem.inria.fr
Subject: Re: let int = ?([' ' '\t'] '-') digits+
Date: Fri, 29 Jun 2007 13:57:05 -0400 [thread overview]
Message-ID: <jwvzm2i7in5.fsf-monnier+gmane.comp.lang.caml.inria@gnu.org> (raw)
In-Reply-To: <200706291639.39529.jon@ffconsultancy.com> (Jon Harrop's message of "Fri\, 29 Jun 2007 16\:39\:39 +0100")
> Is this a good idea?
Don't think so: it doesn't help the case where you want to use negation on
a variable rather than a constant, so it introduces a fairly
subtle inconsistency which doesn't seem to be worth the trouble.
I guess in Haskell you could use type class trickery so that
"f - 3" substracts 3 from f if f is numeric and passes -3 to f if f is
a function (I leave the case where f is both a function and a member of
the Number class as an exercise to the user).
that would be even more evil,
Stefan
next prev parent reply other threads:[~2007-06-29 17:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-29 15:39 Jon Harrop
2007-06-29 15:56 ` [Caml-list] " Robert C Fischer
2007-06-29 16:32 ` Brian Hurt
2007-06-29 16:40 ` Jon Harrop
2007-06-29 18:21 ` Philippe Wang
2007-06-29 15:57 ` pzimmer
2007-06-29 16:35 ` Robert C Fischer
2007-06-29 16:41 ` Jon Harrop
2007-06-29 17:57 ` Stefan Monnier [this message]
2007-06-29 18:11 ` [Caml-list] " Robert C Fischer
2007-06-29 21:05 ` Jon Harrop
2007-06-29 18:29 ` [Caml-list] " skaller
2007-06-29 18:53 ` Pal-Kristian Engstad
2007-06-29 19:21 ` Daniel Bünzli
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