I'd be happy to entertain patches or at least more specific suggestions to improve strextract() and strcapture(). I hadn't exported strextract(), because I wasn't quite sure how it should behave. This feedback should be helpful.
Thanks, Michael On Thu, Aug 29, 2019 at 2:20 PM Cyclic Group Z_1 via R-devel <r-devel@r-project.org> wrote: > > Thank you, I am aware that there are packages that can accomplish this. I > mentioned stringr::str_extract as a function that does not drop empty > matches. I think that the behavior of regmatches(..., regexpr(...)) in base R > should permit an option to prevent dropping of empty matches both for sake of > consistency with the rest of the language (missing data does not yield a > dropped index in other sorts of R functions, and an empty match conceptually > corresponds with missing data) and facility of use in data.frames. The > behavior of regmatches(..., gregexpr(...)) is not objectionable to me, as > lists do not drop indices when they contain character(0) vectors. > Alternatively, perhaps this should be reflected in the (currently > non-exported) strextract. > > Best, > CG > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel -- Michael Lawrence Scientist, Bioinformatics and Computational Biology Genentech, A Member of the Roche Group Office +1 (650) 225-7760 micha...@gene.com Join Genentech on LinkedIn | Twitter | Facebook | Instagram | YouTube ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
