Method Duplicate

r/src/altrep.cpp:150–152

Materialize and then duplicate data2

  // Materialize and then duplicate data2
  static SEXP Duplicate(SEXP alt, Rboolean /* deep */) {
    return Rf_duplicate(Impl::Materialize(alt));
  }

  static SEXP Coerce(SEXP alt, int type) {
    return Rf_coerceVector(Impl::Materialize(alt), type);