[prev in list] [next in list] [prev in thread] [next in thread] 

List:       r-devel
Subject:    [Rd] keepNA in nchar and nzchar
From:       William Dunlap via R-devel <r-devel () r-project ! org>
Date:       2016-03-16 15:59:46
Message-ID: CAF8bMcaL8_E96qqyQFUkb5Xpvsi+iYMt-gUyAqipTkK0OXSqUA () mail ! gmail ! com
[Download RAW message or body]

Is it intended that in yesterday's version of R-devel the default value of
keepNA is different in nchar (NA) and nzchar (FALSE)?

  > args(nchar)
  function (x, type = "chars", allowNA = FALSE, keepNA = NA)
  NULL
  > args(nzchar)
  function (x, keepNA = FALSE)
  NULL

Is it intended that for keepNA=NA, nchar and nzchar do not
give concordant results?

  > vapply(c(TRUE, FALSE, NA), function(keepNA) nchar(NA_character_,
keepNA=keepNA), FUN.VALUE=integer(1))
  [1] NA  2 NA
  > vapply(c(TRUE, FALSE, NA), function(keepNA) nzchar(NA_character_,
keepNA=keepNA), FUN.VALUE=logical(1))
  [1]   NA TRUE TRUE

> version$version.string
[1] "R Under development (unstable) (2016-03-15 r70334)"

Bill Dunlap
TIBCO Software
wdunlap tibco.com

	[[alternative HTML version deleted]]

______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
[prev in list] [next in list] [prev in thread] [next in thread]