[Rcpp-devel] loadRcppModules

[schattenpflanze at arcor.de]

That sounds fantastic, thank you! Is the new version already available 
for download?

Best regards,
Peter



Am 11.04.2011 12:14, schrieb Romain Francois:
> I've also updated the skeleton generator so that loadRcppModules is used
> by the the package that is generated.
>
> However, it should be noted that things are directly exported into the
> namespace, where before only the module was exported.
>
> So when you do:
>
>  > Rcpp.package.skeleton( "testmod", module = TRUE )
>
> $ R CMD INSTALL testmod
>
>  > require( testmod )
>  > foo()
> [1] 1
>  > w <- new( World )
>  > w$greet()
> [1] "hello"
>  > w$set( "bonjour")
>  > w$greet()
> [1] "bonjour"
>
> you can use functions (e.g. foo) or classes (e.g. World ) directly.
>
> Hope this is useful.
>
> Romain
>
> Le 11/04/11 11:41, Romain Francois a écrit :
>> Hello,
>>
>> I've added an experimental feature to Rcpp minutes ago.
>>
>> This is to simplify (yet again) dealing with modules. Now, when one
>> wants to use C++ functions and classes that are declared in a module,
>> the only things you have to do are:
>>
>> * declare them in the "RcppModules" field of DESCRIPTION file, for
>> example (taken from the testRcppModule package, part of Rcpp's testing
>> universe):
>>
>> Package: testRcppModule
>> Type: Package
>> Title: Some test examples using Rcpp with the Module feature
>> Version: 0.1
>> Date: 2010-09-06
>> Author: JMC
>> Maintainer: <jmc at stat.stanford.edu>
>> Description: Some examples taken (and perhaps modified) from the Rcpp
>> Modules documentation.
>> License: GPL(>=2)
>> LazyLoad: yes
>> Depends: methods, Rcpp (>= 0.8.5)
>> LinkingTo: Rcpp
>> RcppModules: yada, stdVector, NumEx
>> Packaged: 2010-09-09 18:42:28 UTC; jmc
>>
>> The relevant line being:
>>
>> RcppModules: yada, stdVector, NumEx
>>
>>
>>
>>
>> * load them. We used to have to load them individually by calling Module
>> and maybe populate. Now, this is simpler. You just need a .onLoad
>> function that looks like this:
>>
>> .onLoad <- function(libname, pkgname){
>> loadRcppModules()
>> }
>>
>> This will load the declared modules, and populate them into your
>> package's namespace.
>>
>> I will update the Rcpp-modules vignette accordingly.
>>
>> Suggestions, comments, improvements, "what are you ? nuts !", ... are
>> always welcome.
>>
>> Romain
>>
>
>