From: Andreas Rossberg <rossberg@mpi-sws.org>
To: Create Software <createsoftware@users.sourceforge.net>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Pattern-matching on Ocaml records
Date: Mon, 2 May 2011 14:44:23 +0200 [thread overview]
Message-ID: <CA8A0236-992B-47FC-92B7-66B428E1E882@mpi-sws.org> (raw)
In-Reply-To: <4DBEA464.7090102@users.sourceforge.net>
On May 2, 2011, at 14:32, Create Software wrote:
> PS: I also tried
>
> let reset' a =
> let lbl = a.label in
> lbl <- 0
> ;;
>
> but "The identifier lbl is not mutable.", in both OCaml and Caml
> Light. Why so?
Try:
a.lbl <- 0
Only the record field itself is mutable. Extracting only gives you a
value, not a reference.
/Andreas
next prev parent reply other threads:[~2011-05-02 12:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-02 12:32 Create Software
2011-05-02 12:44 ` Andreas Rossberg [this message]
2011-05-02 13:16 ` Create Software
2011-05-02 13:24 ` Andreas Rossberg
2011-05-02 13:33 ` Jacques Garrigue
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