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From: "Daniel Bünzli" <daniel.buenzli@epfl.ch>
To: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Weak hash table for attaching extra data to an object
Date: Wed, 15 Aug 2007 14:33:48 +0200	[thread overview]
Message-ID: <F68E29A6-45BA-427D-BC06-17190529A369@epfl.ch> (raw)
In-Reply-To: <200708150133.23573.jon@ffconsultancy.com>


Le 15 août 07 à 02:33, Jon Harrop a écrit :

> I think Markus Mottl once said that all libraries should include  
> phantom types...

I don't know if he said that however the point of a phantom type is  
that there is no concrete value associated to it -- the phantom  
parameter isn't used in the type definition. Hence phantoms are  
useless if you need to decorate a type.

Daniel


  reply	other threads:[~2007-08-15 12:33 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-08-14 10:15 Richard Jones
2007-08-14 11:08 ` [Caml-list] " Thomas Fischbacher
2007-08-14 11:48   ` Till Varoquaux
2007-08-14 20:44   ` Jon Harrop
2007-08-14 23:09     ` Stefano Zacchiroli
2007-08-15  0:33       ` Jon Harrop
2007-08-15 12:33         ` Daniel Bünzli [this message]
2007-08-16 14:54         ` Markus Mottl
2007-08-15  1:28     ` skaller
2007-08-15 19:04     ` Richard Jones
2007-08-16 16:17       ` Some observations and measurements with using Weak Hashtable to annotate a tree (was: Re: [Caml-list] Weak hash table for attaching extra data to an object) Richard Jones
2007-08-14 16:22 ` [Caml-list] Weak hash table for attaching extra data to an object Richard Jones
2007-08-14 23:24   ` Till Varoquaux
2007-08-14 23:35   ` Fernando Alegre
2007-08-15  7:59     ` Richard Jones

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