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Re: new milestone build for Renjin - R for the JVM

Subject: Re: new milestone build for Renjin - R for the JVM
Date: Thu, 12 May 2011 21:27:41 +0200
On 05/12/2011 02:17 PM, Alexander Bertram wrote:
Hi all,
I'm posting a new milestone build for Renjin, a pure java
implementation of an R-language interpreter. There's still a long way
to go to implementing the base library (huge), but this latest build
is complete enough to correctly load and execute external packages
written in R.
http://code.google.com/p/renjin
If there are any R developers/users in the group it would be great to
get feedback!
Best,
Alex
Hi Alex,
I had myself to figure how to call some programs written in R from the JVM,
it was not a pleasant trip so I'm a big supporter of your work.
I've read your presentation:
http://caes.ewi.utwente.nl/External/NLFP/Slides/Session-2/AlexanderBertram.pdf
and I have some questions:
It seems that your implementation requires to store objects on the Google cloud, it's cool for a prototype but having a predefined way to execute any R functions
in memory is must have from my point of view.
Also, for your second examples of functions that you don't want to compile,
the function can be easily transformed to something more appealing
if the compiler transforms the code to introduce
a 'else' branch that guarantee that x is always a local variable.
f <- function() {
  if(runif() > 0.5) x <- 5
  else x <- x_from_global_scope
  ...
}
cheers,
Rémi
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