[R] primitives again

Erin Hodgess erinm.hodgess at gmail.com
Sun Mar 15 16:29:46 CET 2009


Thank you

On Sun, Mar 15, 2009 at 8:23 AM, Wacek Kusnierczyk
<Waclaw.Marcin.Kusnierczyk at idi.ntnu.no> wrote:
> Edna Bell wrote:
>> How do I find the functions which are primitives, please?
>>
>
> you can scan the whole search path for functions that are primitives:
>
>    primitives = sapply(search(), function(path)
>       with(as.environment(path), Filter(is.primitive, lapply(ls(), get))))
>
> primitives is a list of named lists of primitives, one sublist for each
> attached package (most sublists will be empty, i guess).
>
> vQ
>
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>



-- 
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
mailto: erinm.hodgess at gmail.com




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