[Rcpp-devel] loadRcppModules

[Romain Francois]

Le 11/04/11 12:24, schattenpflanze at arcor.de a écrit :
> That sounds fantastic, thank you! Is the new version already available
> for download?

No

> 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
>>>
>>
>>
>
>


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