From: Ville-Pertti Keinonen <will@exomi.com>
To: david.baelde@ens-lyon.org
Cc: "Michael D. Adams" <mdmkolbe@gmail.com>, caml-list@inria.fr
Subject: Re: [Caml-list] Efficency of varient types
Date: Mon, 28 Nov 2005 09:53:12 +0200 [thread overview]
Message-ID: <1133164392.711.7.camel@acerf.exomi.com> (raw)
In-Reply-To: <53c655920511272324w1630fe89y@mail.gmail.com>
On Mon, 2005-11-28 at 08:24 +0100, David Baelde wrote:
> First, I'd like to point that you're talking about sum types and not
> variants. For short, variants are the backquoted labels `Int of int,
> and I think they cost more at runtime, for they cannot be encoded as
> integers.
Sum types are also known as variant types. This terminology is even
used in the OCaml documentation.
What you're talking about are *polymorphic* variants, and they are in
fact encoded as integers, but they don't fit in the tag-portion of the
GC header so they take up more space than regular variants if they have
any parameters.
next prev parent reply other threads:[~2005-11-28 7:53 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-25 23:53 Michael D. Adams
2005-11-26 0:31 ` [Caml-list] " Nicolas Cannasse
2005-11-26 1:22 ` Brian Hurt
2005-11-26 9:39 ` Nicolas Cannasse
2005-11-28 0:17 ` Obj or not Obj Christophe Raffalli
2005-11-28 8:41 ` [Caml-list] " Nicolas Cannasse
2005-11-28 9:27 ` Christophe Raffalli
2005-11-28 9:33 ` skaller
2005-11-28 8:43 ` Alain Frisch
2005-11-26 2:54 ` [Caml-list] Efficency of varient types skaller
2005-11-27 5:06 ` Michael D. Adams
2005-11-27 5:45 ` Brian Hurt
2005-11-27 10:02 ` Nicolas Cannasse
2005-11-27 15:35 ` Michael D. Adams
2005-11-27 18:08 ` Brian Hurt
2005-12-02 15:07 ` Michael D. Adams
2005-11-26 1:18 ` Jon Harrop
2005-11-27 14:57 ` Lukasz Stafiniak
2005-11-27 15:47 ` Lukasz Stafiniak
2005-11-28 8:14 ` Christophe Raffalli
2005-11-28 7:24 ` David Baelde
2005-11-28 7:49 ` Jacques Garrigue
2005-11-28 10:01 ` Jon Harrop
2005-11-28 10:26 ` Luc Maranget
2005-11-28 7:53 ` Ville-Pertti Keinonen [this message]
2005-12-01 17:05 ` Stefan Monnier
2005-12-02 15:07 ` [Caml-list] " Michael D. Adams
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