assert_missing() and assert_infinite() check if an object contains any
missing (NA, NaN) or infinite (Inf) value.
assert_unique() checks if an object contains duplicated elements.
assert_missing(x)assert_infinite(x)
assert_unique(x)
Throws an error, if any, and returns x invisibly otherwise.
An object to be checked.
N. Frerebeau
Other validation methods:
check-attribute,
check-matrix,
check-numeric-comparison,
check-numeric-trend,
check-numeric,
check-type,
needs(),
validate()