From: Sven LUTHER <luther@dpt-info.u-strasbg.fr>
To: Pixel <pixel@mandrakesoft.com>
Cc: Vitaly Lugovsky <vsl@ontil.ihep.su>, caml-list@inria.fr
Subject: Re: [Caml-list] unused variables warning
Date: Sun, 29 Apr 2001 15:06:25 +0200 [thread overview]
Message-ID: <20010429150625.A21299@lambda.u-strasbg.fr> (raw)
In-Reply-To: <20010429095822.5E8185725@leia.mandrakesoft.com>; from pixel@mandrakesoft.com on Sun, Apr 29, 2001 at 11:58:22AM +0200
On Sun, Apr 29, 2001 at 11:58:22AM +0200, Pixel wrote:
> Vitaly Lugovsky <vsl@ontil.ihep.su> writes:
>
> [...]
>
> > > let f x =
> > > let x' = <...> in
> > > x
> > >
> > > would issue something like
> > >
> > > File "test.ml", line 2, characters 3-18:
> > > Unused variable x'
> >
> > It's "unused" and can be optimized out only when <...> is a pure
> > functional statement (not changing global state).
>
> even if the <...> is unpure, caml could warn that x' is unused. It doesn't mean
> in any way that computing x' is unnecessary.
>
> and caml should not warn for
>
> let _x' = <...> in
I guess you mean just :
let _ = <...> in
?
Friendly,
Sven Luther
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next prev parent reply other threads:[~2001-04-29 13:06 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-28 9:57 Pixel
2001-04-29 8:15 ` Vitaly Lugovsky
2001-04-29 9:58 ` Pixel
2001-04-29 13:06 ` Sven LUTHER [this message]
2001-04-29 13:14 ` Pixel
2001-04-29 10:14 ` Marcin 'Qrczak' Kowalczyk
2002-09-09 21:24 ` [Caml-list] " Pixel
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