From: bluestorm <bluestorm.dylc@gmail.com>
To: caml-list@inria.fr
Subject: Re: [Caml-list] Symbol type
Date: Mon, 28 Jun 2010 06:56:08 +0200 [thread overview]
Message-ID: <AANLkTin6kRFjYhiTG5pk2s_WaNlfwbko3sWPHs_9mncC@mail.gmail.com> (raw)
In-Reply-To: <20100628021543.GA14360@malaquias.DHCP-GERAL>
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If your set of symbol is closed, you can use a variant type (sum type).
type symbols =
| A
| B
If you really need open symbols, you can use [polymorphic variants].
Let tag_a foo = (`A, foo)
[polymorphic variants]
http://caml.inria.fr/pub/docs/manual-ocaml/manual006.html#toc36
However, you won't have convenience functions such as string_of_symbol; you
would have to define them yourself.
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prev parent reply other threads:[~2010-06-28 4:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-28 2:15 José Romildo Malaquias
2010-06-28 2:33 ` Michael Ekstrand
2010-06-28 13:37 ` [Caml-list] " Nicholas Kidd
2010-06-28 4:56 ` bluestorm [this message]
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