//example
#include <ROOT/RDataFrame.hxx>
#include <ROOT/RDFHelpers.hxx>
#include <ROOT/RDF/GraphUtils.hxx>
#include <string>

void rdf_rvecstring()
{
  ROOT::RDataFrame df(10);
  //auto d = df.Define("var1",[](){return ROOT::RVec<std::string>({"a","b"});});
  auto d = df.Define("var1",[](){return std::vector<std::string>({"a","b"});});

  d.Snapshot("A","a.root",{"var1"});
  

}

int main()
{
  rdf_rvecstring();
}