From: Per Abrahamsen <abraham@dina.kvl.dk>
Cc: emacs-devel@gnu.org
Subject: Re: Creating recursive customization types / widgets
Date: Tue, 02 Dec 2003 11:31:24 +0100 [thread overview]
Message-ID: <rjk75fo6ir.fsf@sheridan.dina.kvl.dk> (raw)
In-Reply-To: <E1AR1z0-0000Uj-0c@fencepost.gnu.org> (Richard Stallman's message of "Mon, 01 Dec 2003 23:17:54 -0500")
Richard Stallman <rms@gnu.org> writes:
> ISTR that there is a frequently used term for an object
> whose value will be computed only when you actually refer to it,
> but it has been so many years that I don't remember the term.
> Is it "lazy"? Maybe this type should be called `lazy'.
The word is lazy, as in lazy evaluation.
> `delayed' is ok too.
'lazy' and 'delayed' are good because they describe how the widget
accomplish its task. But I now believe 'recursive' is best, because
it described what the task is. Also
(define-widget 'binary-tree 'recursive ...)
reads well: A binary tree is a recursive datastructure with the
following attributes ...
That lazy or delayed expansion is needed for recursive datastructures
is an (admittedly important) implementation detail.
May I commit the widget under the name `recursive'?
next prev parent reply other threads:[~2003-12-02 10:31 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-29 16:38 Creating recursive customization types / widgets Per Abrahamsen
2003-11-29 18:34 ` Per Abrahamsen
2003-11-30 20:05 ` Stefan Monnier
2003-12-01 11:36 ` Per Abrahamsen
2003-12-01 16:35 ` Thien-Thi Nguyen
2003-12-02 12:37 ` tapsellferrier.co.uk Host name lookup failure Robert J. Chassell
2003-12-01 17:08 ` Creating recursive customization types / widgets Per Abrahamsen
2003-12-02 0:31 ` Juri Linkov
2003-12-02 10:19 ` Per Abrahamsen
2003-12-02 12:46 ` David Kastrup
2003-12-02 13:34 ` Per Abrahamsen
2003-12-02 10:40 ` Per Abrahamsen
2003-12-01 13:36 ` Per Abrahamsen
2003-12-01 16:10 ` Ted Zlatanov
2003-12-01 19:24 ` Per Abrahamsen
2003-12-01 1:45 ` Richard Stallman
2003-12-01 13:27 ` Per Abrahamsen
2003-12-02 4:17 ` Richard Stallman
2003-12-02 10:31 ` Per Abrahamsen [this message]
2003-12-03 4:46 ` Richard Stallman
2003-12-03 12:30 ` Per Abrahamsen
2003-12-03 15:26 ` Per Abrahamsen
2003-12-03 19:05 ` Kevin Rodgers
2003-12-02 11:24 ` David Kastrup
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