Le 17 juil. 2013 à 13:41, JJ Allaire <jj.alla...@gmail.com> a écrit :
>> dispatching could also happen in attributes. Why not having something like
>> this:
>>
>> // [[Rcpp::export]]
>> void foo( NumericVector x) {
>> // do some stuff
>> }
>>
>> // [[Rcpp::export]]
>> void foo( IntegerVector x) {
>> // do some other stuff
>> }
>>
>> This would involve some work in the way attributes work. But I can defintely
>> see the value of this. Comments. JJ ?
>
> Yes, agreed, this would be really cool! I don't think it's in principle
> difficult to do.
Same here. I'm sort of off the grid for a few days now, resting from about
3weeks of travelling.
I'll have a look later then.
Another extension i had in mind, well i think hadley mentionned it in Lyon was
the ability somehow to export templates.
template <int RTYPE>
Vector<RTYPE> foo( Vector<RTYPE> x){
// do stuff
}
At the moment, if we have a function like this, we have to write the dispatcher
sort of manually with a switch(TYPEOF)) construct.
The issue then i guess is to find the right way to express which instantiations
of the template we export, maybe something like :
// [[Rcpp::exportTemplate(INTSXP,REALSXP)]]
But maybe it is not worth the trouble. Maybe this is simply a documentation
issue on hiw to dispatch.
Romain_______________________________________________
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