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From: Dario Teixeira <darioteixeira@yahoo.com>
To: caml-list@yquem.inria.fr, Anthony Tavener <anthony.tavener@gmail.com>
Subject: Re: [Caml-list] Subtyping structurally-equivalent records, or something like it?
Date: Sat, 1 May 2010 12:55:17 -0700 (PDT)	[thread overview]
Message-ID: <602616.65342.qm@web111501.mail.gq1.yahoo.com> (raw)

Hi,

>  type kinematic = { lin: Vec.t; ang: Vec.t }
>
> Which I've been using to represent a medley of physical attributes (force, > momentum, velocity, etc.).

I second Stéphane's suggestion of using phantom types; moreover,
I recommend you read an article that discusses them to some detail
and covers their use for precisely this sort of problem:
http://camltastic.blogspot.com/2008/05/phantom-types.html

Cheers,
Dario Teixeira






             reply	other threads:[~2010-05-01 19:55 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-01 19:55 Dario Teixeira [this message]
2010-05-01 20:01 ` Sylvain Le Gall
2010-05-04 10:33   ` [Caml-list] " AUGER Cédric
     [not found]   ` <4429.86797211251$1272970133@news.gmane.org>
2010-05-04 11:53     ` Sylvain Le Gall
2010-05-04 12:47       ` [Caml-list] " rossberg
2010-05-04 13:42         ` Sylvain Le Gall
2010-05-04 15:18           ` [Caml-list] " Fabrice Le Fessant
2010-05-05  9:31         ` Goswin von Brederlow
2010-05-05 12:12           ` rossberg
2010-05-05 16:46             ` Goswin von Brederlow
2010-05-04 13:37       ` Edgar Friendly
2010-05-05  9:33         ` Goswin von Brederlow
2010-05-05 11:10         ` Yaron Minsky
  -- strict thread matches above, loose matches on Subject: below --
2010-05-01 16:04 Anthony Tavener
2010-05-01 16:51 ` [Caml-list] " Stéphane Lescuyer
2010-05-02  2:59   ` Anthony Tavener
2010-05-07  9:42     ` AUGER

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