[Rd] combine UserDefinedDatabase and regular environments
Romain Francois
romain.francois at dbmail.com
Thu Nov 5 18:58:30 CET 2009
Hello,
Is it possible to have the effect of UserDefinedDatabase outside of
"attached" environments ? Can I disguise an environment of the
sys.frames() as a UserDefinedDatabase ?
This seems to suggest that it might be possible :
> f <- function(){ e <- environment(); class(e) <-
"UserDefinedDatabase"; ff }
> f()
*** caught segfault ***
address (nil), cause 'unknown'
Traceback:
1: f()
Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace
At the moment, it seems to be either lookup using UserDefinedDatabase or
regular lookup. Has anyone tried to combine both ?
--
Romain Francois
Professional R Enthusiast
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http://romainfrancois.blog.free.fr
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