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
history of objects() and ls()
3 messages · Ben Bolker, Peter Dalgaard, William Dunlap
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
S-PLUS took it from S, sometime in the early 1990's. The "White Book"
("Statistical Models in S", Chambers and Hastie, eds.,1992), uses objects()
on p.88..
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Thu, Jan 3, 2019 at 4:47 PM Peter Dalgaard <pdalgd at gmail.com> wrote:
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
______________________________________________ R-devel at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
-- 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
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