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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