Method IsNa

inst/include/Rcpp/sugar/functions/is_na.h:34–34

	typedef Rcpp::VectorBase<RTYPE,NA,VEC_TYPE> BASE ;

	IsNa( const BASE& obj_) : obj(obj_){}

        inline int operator[]( R_xlen_t i ) const {
		return ::Rcpp::traits::is_na<RTYPE>( obj[i] ) ;