From: Chris Hecker <checker@d6.com>
To: leary@nwlink.com, caml <caml-list@inria.fr>
Subject: Re: [Caml-list] enums in OCaml?
Date: Thu, 14 Jun 2001 01:41:29 -0700 [thread overview]
Message-ID: <4.3.2.7.2.20010614013609.02977630@shell16.ba.best.com> (raw)
In-Reply-To: <20010614011550.A28578@jean>
>So, what's so wrong with just using variables?
>let Accel = 1;;
>let Stop = 0;;
>seems pretty short to write and shortest to use... Am I missing something
>( elegant | obvious )? Is that just ugly?
You can't pattern match on variables (even constant nonmutable ones like that). See the list archives for threads about this.
You have to do this:
match value with
| v when v = accel -> blah
| v when v = stop -> etc
Not very pretty.
If you're going to be using them in code a lot, then I'd just use variants (sum types). Yes, it'd be best to be able to switch on the constants, but this is apparently hard; see the archive.
Chris
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next prev parent reply other threads:[~2001-06-14 8:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-13 2:21 leary
2001-06-13 7:37 ` David Mentre
2001-06-13 8:20 ` leary
[not found] ` <200106130751.f5D7pbL11758@ionie.inria.fr>
2001-06-13 8:18 ` leary
2001-06-13 8:46 ` David Mentre
2001-06-14 8:15 ` leary
2001-06-14 8:41 ` Chris Hecker [this message]
2001-06-14 8:53 ` Jacques Garrigue
2001-06-14 9:12 ` Francisco Valverde Albacete
2001-06-14 13:04 ` Chris Quinn
2001-06-13 20:50 leary
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