Hi Tim, > def = "bool is_na_character_vector(CharacterVector x) { return > CharacterVector::is_na(x); }"
x is a CharacterVector, so you need to check is_na on each element separately. Try: def = "bool is_first_character_na(CharacterVector x) {return CharacterVector::is_na(x[0]);}" and see the Rcpp gallery for more examples: http://gallery.rcpp.org/articles/working-with-missing-values/ Best, -- Hao Ye h...@ucsd.edu On Feb 10, 2015, at 1:50 PM, Tim Keitt <tke...@utexas.edu> wrote: > library(Rcpp) > def = "bool is_na_character_vector(CharacterVector x) { return > CharacterVector::is_na(x); }" > f = cppFunction(def) > print(f(as.character(NA))) # FALSE > > What am I missing? > > THK > > -- > http://www.keittlab.org/ > _______________________________________________ > Rcpp-devel mailing list > Rcpp-devel@lists.r-forge.r-project.org > https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
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