From: Jacques Carette <carette@mcmaster.ca>
To: skaller <skaller@users.sourceforge.net>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] compiler bug?
Date: Fri, 19 May 2006 12:48:00 -0400 [thread overview]
Message-ID: <446DF6C0.4090000@mcmaster.ca> (raw)
In-Reply-To: <1148003249.25630.29.camel@rosella.wigram>
skaller wrote:
>>>What about high level optimisations?
>>>
>>>Felix supports this:
>>>
>>> reduce revrev[t] (x:list[t]): rev (rev x) => x;
>>>
>>>
>>Haskell (GHC to be precise) allows that too. But is syntactic
>>term-rewriting, in other words it is *untyped*.
>>
>>
>
>It's well typed. x:list[t] means x is of type list[t].
>
>
The *result* is well-typed. What is the 'type' of the rule (ie the
'function' reduce) ? reduce acts on the programming language syntax,
not on semantic values.
Jacques
next prev parent reply other threads:[~2006-05-19 16:47 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-17 23:14 Dan Koppel
2006-05-17 23:33 ` [Caml-list] " John Carr
2006-05-18 17:15 ` Xavier Leroy
2006-05-18 17:34 ` Jacques Carette
2006-05-18 17:46 ` Xavier Leroy
2006-05-18 19:31 ` Jacques Carette
2006-05-18 20:07 ` David Brown
2006-05-18 20:15 ` Jacques Carette
2006-05-18 20:20 ` Alain Frisch
2006-05-18 18:19 ` skaller
2006-05-18 18:53 ` Jacques Carette
2006-05-19 1:47 ` skaller
2006-05-19 2:17 ` Brian Hurt
2006-05-19 3:11 ` skaller
2006-05-19 16:48 ` Jacques Carette [this message]
2006-05-19 19:10 ` skaller
2012-08-06 10:04 [Caml-list] Compiler bug? Dmitry Bely
2012-08-06 10:11 ` Alain Frisch
2012-08-06 10:20 ` Dmitry Bely
2012-08-06 10:34 ` Alain Frisch
2012-08-06 11:03 ` Dmitry Bely
2012-08-06 11:32 ` Alain Frisch
2012-08-06 12:16 ` Dmitry Bely
2012-08-07 1:35 ` Cedric Cellier
2012-08-08 16:03 ` Dmitry Bely
2012-08-08 18:03 ` Alain Frisch
2012-08-08 18:22 ` Jesper Louis Andersen
2012-08-08 18:40 ` Dmitry Bely
2012-08-08 19:29 ` Fabrice Le Fessant
2012-08-08 23:34 ` Anil Madhavapeddy
2012-08-09 0:53 ` Francois Berenger
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