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From: Robert C Fischer <robert@fischerventure.com>
To: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Re: let int = ?([' ' '\t'] '-') digits+
Date: Fri, 29 Jun 2007 13:11:23 -0500	[thread overview]
Message-ID: <46854B4B.2060003@fischerventure.com> (raw)
In-Reply-To: <jwvzm2i7in5.fsf-monnier+gmane.comp.lang.caml.inria@gnu.org>

Syntax polymorphism violates the principle of least surprise.  It is, 
indeed, Teh Eevil.

~~ Robert.

Stefan Monnier wrote:
>> Is this a good idea?
>>     
>
> Don't think so: it doesn't help the case where you want to use negation on
> a variable rather than a constant, so it introduces a fairly
> subtle inconsistency which doesn't seem to be worth the trouble.
>
> I guess in Haskell you could use type class trickery so that
>
>   "f - 3" substracts 3 from f if f is numeric and passes -3 to f if f is
>   a function (I leave the case where f is both a function and a member of
>   the Number class as an exercise to the user).
>
> that would be even more evil,
>
>
>         Stefan
>
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>   


  reply	other threads:[~2007-06-29 18:11 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-06-29 15:39 Jon Harrop
2007-06-29 15:56 ` [Caml-list] " Robert C Fischer
2007-06-29 16:32   ` Brian Hurt
2007-06-29 16:40   ` Jon Harrop
2007-06-29 18:21     ` Philippe Wang
2007-06-29 15:57 ` pzimmer
2007-06-29 16:35   ` Robert C Fischer
2007-06-29 16:41   ` Jon Harrop
2007-06-29 17:57 ` Stefan Monnier
2007-06-29 18:11   ` Robert C Fischer [this message]
2007-06-29 21:05     ` [Caml-list] " Jon Harrop
2007-06-29 18:29 ` [Caml-list] " skaller
2007-06-29 18:53   ` Pal-Kristian Engstad
2007-06-29 19:21     ` Daniel Bünzli

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