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Is value absent

Source: R/utilities.R
is_absent.Rd

Returns true if a value is either NULL, NA or "". In the case of a vector all values must be NULL/NA/"" for x to be regarded as absent.

Usage 

is_absent(x, na = TRUE, blank = TRUE)

Arguments

x

a value to check if it is absent or not

na

do NAs count as absent

blank

do blanks i.e. "" count as absent