Aaargh, sorry. I thought it might be to do with Australian English... Prof Brian Ripley wrote: > That is correct: I suspect you meant the character class [[:upper:]] > >> grep( '[[:upper:]]', letters, val=TRUE) character(0) > > You asked for matches amongst :upper:, and that is what you got. > As ?rexexp does say > > (Note that the > brackets in these class names are part of the symbolic > names, and > must be included in addition to the brackets delimiting the > bracket list.) > > this appears to be a homework failure. > > On Tue, 25 Mar 2008, [EMAIL PROTECTED] wrote: > >> Full_Name: Mark Bravington >> Version: 2.6.2 patched >> OS: Windows XP Pro >> Submission from: (NULL) (140.79.22.104) >> >> >>> grep( '[:upper:]', letters, val=T) # shurely shouldn't > match anything ?? >> [1] "e" "p" "r" "u" >> >> The converse ( '[:lower:]' and LETTERS) seems to work OK. >> >> --please do not edit the information below-- >> >> Version: >> platform = i386-pc-mingw32 >> arch = i386 >> os = mingw32 >> system = i386, mingw32 >> status = Patched >> major = 2 >> minor = 6.2 >> year = 2008 >> month = 03 >> day = 21 >> svn rev = 44836 >> language = R >> version.string = R version 2.6.2 Patched (2008-03-21 r44836) >> >> Windows XP (build 2600) Service Pack 2 >> >> Locale: >> > LC_COLLATE=English_Australia.1252;LC_CTYPE=English_Australia.1252;LC_M >> > ONETARY=English_Australia.1252;LC_NUMERIC=C;LC_TIME=English_Australia. >> 1252 >> >> Search Path: >> .GlobalEnv, package:stats, package:graphics, package:grDevices, >> package:utils, package:datasets, package:methods, Autoloads, pa >> >> ______________________________________________ >> R-devel@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-devel
-- Mark Bravington CSIRO Mathematical & Information Sciences Marine Laboratory Castray Esplanade Hobart 7001 TAS ph (+61) 3 6232 5118 fax (+61) 3 6232 5012 mob (+61) 438 315 623 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
