[R] builtin vs. closure

[Erin Hodgess]

Thank you

On Sun, Mar 15, 2009 at 8:36 AM, Duncan Murdoch <murdoch at stats.uwo.ca> wrote:
> On 15/03/2009 12:00 AM, Edna Bell wrote:
>>
>> Dear R Gurus:
>>
>> I'm working slowly through "R Programming for Bioinformatics", which
>> is really interesting!
>>
>> Anyway, my question now is:  what determines if a function is a
>> builtin vs. a closure, please?
>
> Closure is the normal type of function written in R code.  The other special
> types are built in to R; users can't create them except by modifying the R
> source code.  For details see the R Internals manual.
>
> Duncan Murdoch
>
>>
>> For instance:
>>>
>>> typeof(sqrt)
>>
>> [1] "builtin"
>>>
>>> typeof(mean)
>>
>> [1] "closure"
>>
>> Thanks,
>> Edna Bell
>>
>> ______________________________________________
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>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



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