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[Caml-list] Stupid question
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Date: | 2004-01-15 (08:37) |
From: | Christophe Raffalli <Christophe.Raffalli@u...> |
Subject: | Re: [Caml-list] Stupid question |
Brian Hurt wrote: > On 15 Jan 2004, skaller wrote: > > >>Well, <> is a polymorphic value comparison. >>Whereas != is a physical inequality comparison. > > > Yes. I was wondering why the compiler didn't catch that I was comparing > booleans and thus it could inline the value comparison, and reduce it to > the equivelent to !=. I've gotten into the habit of writting <> because > I'm playing around with FP, and 1. <> 1. is false, while 1. != 1. is true. > Usually it is good to avoid comparing float with = and <> ... |a-b|<epsilon is usually what you really need (except when you use float as higher precision int to store date (see Unix.stats) or other similar stuff ...). By the way why not use Int64 instead ? -- Christophe Raffalli Université de Savoie Batiment Le Chablais, bureau 21 73376 Le Bourget-du-Lac Cedex tél: (33) 4 79 75 81 03 fax: (33) 4 79 75 87 42 mail: Christophe.Raffalli@univ-savoie.fr www: http://www.lama.univ-savoie.fr/~RAFFALLI --------------------------------------------- IMPORTANT: this mail is signed using PGP/MIME At least Enigmail/Mozilla, mutt or evolution can check this signature --------------------------------------------- ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners