FALSE & FALSE -> FALSE FALSE & TRUE -> FALSE Why do you need to know what the second value is? It doesn't matter what it is... the answer is FALSE. -- Sent from my phone. Please excuse my brevity.
On May 19, 2017 5:24:06 AM PDT, "Jérémie Juste" <jeremieju...@gmail.com> wrote: >My apologies if I was not clear enough, > >TRUE & NA could be either TRUE or FALSE and consequently is NA. >why is FALSE & NA = FALSE? NA could be TRUE or FALSE, so FALSE & NA >should be NA? > > >On Fri, May 19, 2017 at 2:13 PM, Rolf Turner <r.tur...@auckland.ac.nz> >wrote: > >> On 20/05/17 00:01, Jérémie Juste wrote: >> >>> Hello, >>> >>> Rolf said, >>> >>> TRUE & FALSE is FALSE but TRUE & TRUE is TRUE, so TRUE & NA could be >>> either TRUE or FALSE and consequently is NA. >>> >>> OTOH FALSE & (anything) is FALSE so FALSE & NA is FALSE. >>> >>> >>> According to this logic why is >>> >>> FALSE & NA >>> >>> [1] FALSE >>> >> >> Huh???? >> >> >> cheers, >> >> Rolf Turner >> >> -- >> Technical Editor ANZJS >> Department of Statistics >> University of Auckland >> Phone: +64-9-373-7599 ext. 88276 >> > > > >-- >Jérémie Juste > > [[alternative HTML version deleted]] > >______________________________________________ >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide >http://www.R-project.org/posting-guide.html >and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.