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Date: -- (:)
From: Alain.Frisch@e...
Subject: Re: [Caml-list] OCaml wishlist
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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