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Element-wise check for missing values including NA and NaN. Optionally treats empty strings as missing.
is_missing(x)
Logical vector. NULL input returns logical(0).
logical(0)
Value to check
is_missing(NA) # TRUE is_missing(NaN) # TRUE is_missing("") # TRUE is_missing("text") # FALSE is_missing(c(1, NA, NaN)) # FALSE TRUE TRUE
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