Re: [R] on attach/load of a *package*; was creating library

From: Uwe Ligges <>
Date: Thu, 29 May 2008 17:30:18 +0200

yoooooo wrote:
> Hi,
> I'm able to create a library with R CMD INSTALL cmd, etc... I'm just

You probably mean you are able to *install* a *package*, I guess.

> wondering.. is it possible that when the user says library(boo), it runs
> some initialization code?

Yes: See the manual writing R Extensions and ?.onLoad and ?.First.Lib (depending whether you have a Namespace defined or not).

Uwe Ligges

> I have a dumb R file that is:
> print(2)
> boo <- function(x){}
> when I R CMD INSTALL the library, I'm able to see 2 in my unix console..
> but when I do
> library(boo)
> in R afterwards.. I don't see the 2, but the boo function is there. Is
> there anyways to have the library to run some initialization code when
> loading? Thanks!
> - yoooooooo mailing list PLEASE do read the posting guide and provide commented, minimal, self-contained, reproducible code. Received on Thu 29 May 2008 - 17:11:40 GMT

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