From: Alain.Frisch@ens.fr
To: William Lovas <wlovas@stwing.upenn.edu>
Cc: Caml list <caml-list@inria.fr>, Richard Jones <rich@annexia.org>
Subject: Re: [Caml-list] OCaml wishlist
Date: Tue, 21 Oct 2003 21:46:17 +0200 (MET DST) [thread overview]
Message-ID: <Pine.SOL.4.44.0310212131450.4380-100000@clipper.ens.fr> (raw)
In-Reply-To: <20031021172812.GA26066@force.stwing.upenn.edu>
On Tue, 21 Oct 2003, William Lovas wrote:
> I don't think it would be beneficial in the long run to clutter up the core
> language with these sorts of purely syntactic issues
Not quite. Even without escaping loops, the "return" statement is more
than syntax. Consider:
let f x =
...
match .. with
| .. ->
let .. = (if ... then return "Booh!" else ...)
In some cases, GOTOs^Wstatic exceptions are just a decent solution to
shortcut the normal functional control flow, and much more efficient than
dynamic exceptions. Internally, OCaml has such a mechanism (see
bytecomp/lambda.mli, Lstatic* constructors, used for the compilation of
pattern matching), which, I guess, could be quite easily be exposed in a
type-safe way to the surface language. Note that I'm not really asking for
such a feature.
-- Alain
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next prev parent reply other threads:[~2003-10-21 19:46 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-21 14:29 Richard Jones
2003-10-21 14:55 ` Michal Moskal
2003-10-21 16:02 ` Richard Jones
2003-10-21 17:28 ` William Lovas
2003-10-21 17:50 ` Richard Jones
2003-10-21 20:27 ` Yaron Minsky
2003-10-21 20:32 ` Yaron Minsky
2003-10-21 21:46 ` Alain.Frisch
2003-10-22 0:59 ` Jacques Garrigue
2003-10-22 2:52 ` Brian Hurt
2003-10-22 15:27 ` Michal Moskal
2003-10-21 19:46 ` Alain.Frisch [this message]
2003-10-21 15:26 ` Alain.Frisch
2003-10-21 17:38 ` David Brown
2003-10-21 22:34 Richard Jones
2003-10-22 1:14 ` Jacques Garrigue
2003-10-22 13:21 ` brogoff
2003-10-23 0:31 ` Eray Ozkural
2003-10-23 16:55 ` skaller
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