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From: Chris Hecker <checker@d6.com>
To: Daniel de Rauglaudre <daniel.de_rauglaudre@inria.fr>, caml-list@inria.fr
Subject: Re: status of some big "important" features?
Date: Sat, 30 Dec 2000 11:30:57 -0800	[thread overview]
Message-ID: <4.3.2.7.2.20001230112049.00ba2b60@shell16.ba.best.com> (raw)
In-Reply-To: <20001228101047.A27850@verdot.inria.fr>


>> PS.  Minor question I thought of the other day...is there any way to
>> write "nth" for tuples (as opposed to "fst", which is hard-coded to
>> 2-tuples)?
>Impossible in Camlp4, it is a typing problem.

Oh, I thought camlp4 had the types available to it.  I must have misunderstood the docs.

Hmm.  So similarly, you couldn't write an introspection thing like this in camlp4:

type foo = {bar:float; baz:int };;
let a = {bar = 1.;baz = 1};;
print_members_camlp4 a;;

Where print_members_camlp4 is hooked by camlp4 to iterate over the members of whatever record was passed to it (or error at compile time if it's not a record)?  That's not possible?

Chris




  reply	other threads:[~2000-12-30 21:42 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2000-12-26 23:47 Chris Hecker
2000-12-28  9:10 ` Daniel de Rauglaudre
2000-12-30 19:30   ` Chris Hecker [this message]
2000-12-30 20:53     ` Daniel de Rauglaudre
2000-12-31  1:58       ` Chris Hecker
2000-12-31  3:08         ` Daniel de Rauglaudre
2001-01-02 17:39           ` William Chesters
2000-12-31 20:39   ` John Max Skaller
2000-12-28 20:19 ` A proposal for overloading Christophe Raffalli
2001-01-02 10:38   ` Didier Remy
2001-01-02 19:08     ` Christophe Raffalli

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