edd at debian.org
Wed Feb 27 05:34:19 CET 2013
On 26 February 2013 at 23:00, Greg Minshall wrote:
| > Show reprocucible errors, or the mail doesn't exist ;-)
| works for me! (**) build the example skeleton with attributes=FALSE, "R
Works for me too. Nice example.
Not sure what is going on / causing it, but I think you are correct ...
| CMD build", install.packages(), library(), run rcpp_hello_world(), note
| that a list with two items (each a 2 element vector) is returned. (or,
| just enter rcpp_hello_world to see its definition, and notice you get a
| now, build with attributes=TRUE, run compileAttributes(), "R CMD build";
| install.packages(), library(), run rcpp_hello_world(), and if it fails
| NULL is returned. (in this case, rcpp_hello_world will show an empty
| it makes sense to me this would work (fail) this way, because both the
| files in the anRpackage/R directory are defining the same global
| (function) variable, i.e., rcpp_hello_world. so, i assume whichever of
| these two .R files is interpreted last when the package is loaded will
| take precedence.
... here. If in the 'bad' example I comment that function out as
then the 'bad example' too works. This all is JJ's excellent work, so maybe
he has a clearer view of why rcpp_hello_world ends up being shadowed. Maybe
the example just needs a different name...
I bootstrapped a few small packages using rcpp.package.skeleton including one
with attributes where it didn't bite me. Maybe I just delete the 'hello,
Thanks for the report, Greg. We'll take a look.
Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com
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