missing0 {Ecfun}

Missing or length 0

Description

TRUE if x is missing or if length(x) is 0.

Usage

missing0(x)

Arguments

x

a formal argument as for missing

Details

Only makes sense called from within another function

Value

logical: TRUE if x is missing or if length(x) is 0.

Author(s)

Spencer Graves

See Also

missing

Examples

tstFn <- function(x)missing0(x)
# missing 

all.equal(tstFn(), TRUE)


# length 0 

all.equal(tstFn(logical()), TRUE)


# supplied 

all.equal(tstFn(1), FALSE)