R: Further understanding on the .Internal function

Question

I have read the description but i am still confuse by the role of the .Internal function. Because it works fine with .Internal(body(mean))but not with .Internal(mean). I presume that this is written in c++ and is compiled, but it is possible to see the code? In what folder of the R folder is?

Thanks in advance

score 7 · Accepted Answer · edited May 23 '17 at 12:00

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You can view the c source code with this:

pryr::show_c_source(.Internal(mean()))

From @Dominic Comtois post here, "the show_c_source function will search on GitHub for the relevant piece of code in the C source files. Works for .Internal and .Primitive functions."

edited May 23 '17 at 12:00

Community

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answered May 03 '16 at 20:51

Adam Birenbaum

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Thanks! but i would like to see .Internal() . Cant do that with show_c_source. Any suggestions? – donpresente May 03 '16 at 20:59
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Have you read through [this](http://www-rohan.sdsu.edu/doc/R/manual/R-ints.html#g_t_002eInternal-vs-_002ePrimitive) source? – Adam Birenbaum May 03 '16 at 21:05
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I just tried `pryr::show_c_source(.Internal(.Internal()))` and it seemed to work – Rich Scriven May 03 '16 at 21:07
Thanks Adam and Richard? Last follow up question :) Can it be modify? – donpresente May 03 '16 at 21:15

R: Further understanding on the .Internal function

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