| To: | Tony Plate <tplate@blackmesacapital.com> |
|---|---|
| Subject: | Re: Applying vector functions to dataframes |
| From: | Prof Brian Ripley <ripley@stats.ox.ac.uk> |
| Date: | Fri, 29 Jul 2005 08:03:11 +0100 (BST) |
| Cc: | s-news@lists.biostat.wustl.edu |
| In-reply-to: | <42E90F32.1060602@blackmesacapital.com> |
| References: | <20050726164736.9B954F398C@mail.blarg.net> <42E90F32.1060602@blackmesacapital.com> |
On Thu, 28 Jul 2005, Tony Plate wrote: Thomas Jagger wrote:Good morning. [snip]However, lapply uses for loops, so you might as well use the for loops explicitly (or try R).Actually, while that is true in R, I believe it is not true in S-PLUS: in S-PLUS lapply() calls the compiled function "S_qapply". `Actually', in R it calls the compiled function "lapply", and has done so for a few years. -- Brian D. Ripley, ripley@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 |
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