[R] primitives again

Berwin A Turlach berwin at maths.uwa.edu.au
Sun Mar 15 06:23:08 CET 2009

G'day Edna,

On Sat, 14 Mar 2009 22:52:38 -0500
Edna Bell <edna.bell01 at gmail.com> wrote:

> Dear R Gurus:

Well, I guess I can answer nevertheless. :)

> How do I find the functions which are primitives, please?


Thus, the following code would give you all the primitive functions in
package base:

R> pos <- "package:base"
R> uu <- ls(pos=pos, all=TRUE)
R> tt <- sapply(uu, function(x) is.primitive(get(x, pos=pos)))
R> rr <- uu[tt]
R> rr

You may want to search other packages too.  Or modify the code such
that you loop over your search path and concatenate the results from
the various locations.




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