Message-ID: <307C1E66-8B39-44F4-B861-040BAFD99667@gmail.com>
Date: 2019-01-04T00:46:44Z
From: Peter Dalgaard
Subject: history of objects() and ls()
In-Reply-To: <c0420341-e400-9e7f-b110-2d970d6e7815@gmail.com>
As far as I remember, this comes from S-PLUS, introduced around v.3 (white book?) or maybe v.4, and due to a desire to cut some Unix ties as MS-DOS was taking over the world. However, it was long ago, in a different world, and besides, S-PLUS is dead (mostly).
- Peter
> On 4 Jan 2019, at 00:45 , Ben Bolker <bbolker at gmail.com> wrote:
>
>
> I found out today (maybe I had known sometime before??) that objects()
> is a synonym for ls(). I'm curious about the history, which seems to go
> at least back to the beginning of R. It's been thus since SVN revision
> 2 (Sep 1997) ...
>
> svn cat https://svn.r-project.org/R/trunk/src/library/base/R/attach at 2 |
> grep objects
>
> I had a quick look at the Becker & Chambers brown book (1984) and
> Becker and Wilks blue book (1988) on Google books and could find ls but
> not objects() ... ?
>
> Anyone happen to know?
>
> cheers
> Ben Bolker
>
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--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd.mes at cbs.dk Priv: PDalgd at gmail.com