From: qrczak@knm.org.pl (Marcin 'Qrczak' Kowalczyk)
To: caml-list@inria.fr
Subject: Re: Ref syntax
Date: 22 Dec 2000 16:40:26 GMT [thread overview]
Message-ID: <slrn9470vq.4i5.qrczak@qrnik.zagroda> (raw)
In-Reply-To: <Pine.LNX.4.20_heb2.08.0012211444520.26395-100000@zigzag.cs.huji.ac.il>
Thu, 21 Dec 2000 14:50:38 +0200 (IST), Ohad Rodeh <orodeh@cs.huji.ac.il> pisze:
> I have a modest syntax request as we are approaching
> the release of OCaml-3.01. Currently, if x is a
> reference, one must use the assignment operator (:=) to
> update it. Can array assignment (<-) be used also?
It would be inconsistent. With <- the same "level of deredeferencing"
is on both sides: "r.x <- r.x" is legal. With := the lhs is a reference
and rhs is a dereferenced value, and the identity assignment is "x := !x".
The only consistent syntax would be "!x <- new_contents_of_x". Note
that the revised syntax uses "x.val <- new_contents_of_x", with x.val
being equivalent to old !x on both sides of <- and without the need
of any magic syntax for references in addition to what is available
anyway for mutable fields.
--
__("< Marcin Kowalczyk * qrczak@knm.org.pl http://qrczak.ids.net.pl/
\__/
^^ SYGNATURA ZASTĘPCZA
QRCZAK
next prev parent reply other threads:[~2000-12-22 17:07 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-12-14 14:12 Type annotations Ohad Rodeh
2000-12-15 2:25 ` Jacques Garrigue
2000-12-21 12:50 ` Ref syntax Ohad Rodeh
2000-12-22 3:29 ` Jacques Garrigue
2000-12-22 8:45 ` Sven LUTHER
2000-12-23 0:30 ` John Prevost
2000-12-22 9:07 ` Pierre Weis
2000-12-22 9:30 ` Jacques Garrigue
2000-12-22 14:22 ` Pierre Weis
2000-12-22 19:24 ` Marcin 'Qrczak' Kowalczyk
2000-12-22 9:17 ` Pascal Brisset
2000-12-23 0:37 ` John Prevost
2000-12-22 16:40 ` Marcin 'Qrczak' Kowalczyk [this message]
2000-12-23 0:39 ` John Prevost
2000-12-25 21:58 ` Pierre Weis
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