[Rcpp-devel] Question about modules

[Tim Keitt]

Something like:

https://wiki.python.org/moin/boost.python/WrappingEnums

??

I might poke around and see how hard that would be to implement.

THK


On Thu, Jan 9, 2014 at 12:09 PM, Romain Francois
<romain at r-enthusiasts.com>wrote:

> not really.  the std::is_enum trait in C++11 is going to help, but not
> that much.
>
> Romain
>
> Le 9 janv. 2014 à 19:02, Tim Keitt <tkeitt at utexas.edu> a écrit :
>
> Thanks. Got it working. Looks very promising.
>
> Any progress/work-arounds for enums? I have a ton to deal with.
>
> THK
>
>
> On Thu, Jan 9, 2014 at 11:31 AM, Romain Francois <romain at r-enthusiasts.com
> > wrote:
>
>> Hi,
>>
>> The module docs is probably the one in the worst shape. I think the
>> current recommendation is to have this in one of your .R files:
>>
>> loadModule( "yourmodule", TRUE )
>>
>> which triggers a load action for when the package is loaded.
>>
>> Romain
>>
>> Le 9 janv. 2014 à 17:45, Tim Keitt <tkeitt at utexas.edu> a écrit :
>>
>> OK. Not quite as automatic as I thought.
>>
>> Its now loading the class using 'loadRcppModules' in '.onLoad'.
>>
>> Still a little lost. I'll have to re-read the modules docs. Not sure how
>> to use the class. The factory did not get exposed. Do I have to expose it
>> separately eg using attributes?
>>
>> THK
>>
>>
>> On Thu, Jan 9, 2014 at 10:20 AM, Tim Keitt <tkeitt at utexas.edu> wrote:
>>
>>> Thanks. That at least compiles. (If anyone is curious, through
>>> trial-and-error it appears .factory is not a template and takes a single
>>> argument, the factory function pointer.)
>>>
>>> However I am not seeing any of my functions exported to the package. How
>>> would the factory be called from R? I sort of understood that exporting in
>>> packages was automatic. Do I have to manually create the module in R?
>>>
>>> THK
>>>
>>>
>>> On Thu, Jan 9, 2014 at 4:40 AM, Romain Francois <
>>> romain at r-enthusiasts.com> wrote:
>>>
>>>> Hello,
>>>>
>>>> You can use .factory instead of .constructor in that case.
>>>>
>>>> Romain
>>>>
>>>> Le 9 janv. 2014 à 03:16, Tim Keitt <tkeitt at utexas.edu> a écrit :
>>>>
>>>> I did a little experiment with RCPP_MODULE trying to wrap a class from
>>>> another library. The class in question has a protected default constructor
>>>> and uses a non-member factory function for instantiation.
>>>>
>>>> In short I did not get it to work. I am assuming that if you do not
>>>> include a .constuctor statement, then the class does not get wrapped in the
>>>> module. Is that correct?
>>>>
>>>> THK
>>>>
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>>>> http://www.keittlab.org/
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>>>>
>>>
>>>
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>>>
>>
>>
>>
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>
>
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>


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