From: Sven LUTHER <luther@dpt-info.u-strasbg.fr>
To: Max Skaller <maxs@in.ot.com.au>
Cc: Damien Doligez <Damien.Doligez@inria.fr>, caml-list@inria.fr
Subject: Re: variables in 'let rec'
Date: Wed, 29 Mar 2000 13:29:20 +0200 [thread overview]
Message-ID: <20000329132920.A28331@dpt-info.u-strasbg.fr> (raw)
In-Reply-To: <38E004E8.C28EB2E2@in.ot.com.au>; from maxs@in.ot.com.au on Tue, Mar 28, 2000 at 11:03:36AM +1000
On Tue, Mar 28, 2000 at 11:03:36AM +1000, Max Skaller wrote:
> Damien Doligez wrote:
> >
> > >From: Max Skaller <maxs@in.ot.com.au>
> > >
> > >Alternatively, you can just use
> > >
> > > let rec x' () = ...
> > > and ...
> > > let x = x()
> > >
> > >in lieu of what you really wanted: (that is,
> > >there is a workaround).
> >
> > But that doesn't work for "let rec x = 1 :: x", which is the most
> > interesting feature of O'Caml's recursive value definitions.
>
> It doesn't?
>
> let rec x'() = 1 :: x()'
> let x = x'()
FYI :
bash-2.03$ ocaml
Objective Caml version 2.99 (99/12/08)
# let rec x = 1 :: x ;;
val x : int list =
[1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1;
1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1;
1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1;
1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1;
1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1;
1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1;
1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1;
1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1;
1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1;
1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1;
1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1;
1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1; 1;
...]
# let rec x = 1 :: 2 :: x ;;
val x : int list =
[1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1;
2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2;
1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1;
2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2;
1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1;
2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2;
1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1;
2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2;
1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1;
2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2;
1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1;
2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1; 2; 1;
...]
Friendly,
Sven LUTHER
next prev parent reply other threads:[~2000-03-29 17:24 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-03-25 14:55 Damien Doligez
2000-03-28 1:03 ` Max Skaller
2000-03-29 11:29 ` Sven LUTHER [this message]
2000-03-30 9:52 ` John Max Skaller
-- strict thread matches above, loose matches on Subject: below --
2000-03-28 10:01 Damien Doligez
2000-03-30 9:19 ` John Max Skaller
2000-03-22 9:41 David Chemouil
2000-03-23 1:37 ` Max Skaller
2000-03-23 15:57 ` Xavier Leroy
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