Hi Florian,
On 6 May 2014 at 09:35, Florian Burkart wrote:
| Hi,
|
| I have been creating lists of lists with
|
| return Rcpp::List::create(Rcpp::Named("vec") = someVector,
| Rcpp::Named("lst") = someList,
| Rcpp::Named("vec2") = someOtherVector);
Yes, it is a very common idiom as lists are the R structure used for nesting
object with varying types or sizes.
| or to follow Romain:
|
| using namespace Rcpp ;
| return List::create(
| _["vec"] = someVector,
| _["lst"] = someList,
| _["vec2"] = someOtherVector
| ) ;
|
| But how do I convert the following into a list of lists?
|
| std::vector<std::string> m_column_headers;
| std::vector<std::vector<OptDouble> > m_vectors_of_values;
You probably have to copy at some point. You could also use Rcpp types as
the first (std::vector<std::string>) could be an Rcpp::CharacterVector (which
is a vector of strings, not single char); the second could be a
Rcpp::NumericMatrix. There is some support for as<> and wrap() between
these, but there is no function doing magic of the 'here, just convert these
random two types I listed'. It all depends.
Hope this helps, Dirk
--
Dirk Eddelbuettel | [email protected] | http://dirk.eddelbuettel.com
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