Is Empty
is_empty.Rd
Return TRUE
if a string is empty. Emptiness means that
any one of the following is true: NA
, NaN
,
nchar(as.character(x)) == 0L
,
tolower(as.character(x)) == "na"
is_empty.Rd
Return TRUE
if a string is empty. Emptiness means that
any one of the following is true: NA
, NaN
,
nchar(as.character(x)) == 0L
,
tolower(as.character(x)) == "na"