[Rcpp-devel] nested lists into Rcpp

David García Callejas david.garcia.callejas at gmail.com
Sun Mar 17 21:36:55 CET 2013

Hi all,

this is my first question here:

I have in R a list with several elements, some of them are lists, in the
vein of this:

mylist <- vector("list",10)
for(m in 1:10){
  mylist[[m]]$ID <- m
  mylist[[m]]$num <- vector("list",5)
  mylist[[m]]$num2 <- vector("list",5)

Is there a way to pass a data structure like this to a Rcpp function,
convert it to an appropriate C++ structure, and after doing some work with
it, return it in its original form?

fun <- cxxfunction(signature(x='List'), plugin='Rcpp', body = '
 using namespace std;
  List templist(x);

Surely I am missing something obvious here, but I am just arrived to Rcpp,
and after looking in the documentation, I haven't found anything similar.
Thank you in advance
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