predicate-attributes | R Documentation |
has_length()
checks how long is an object.
is_empty()
checks is an object is empty (any zero-length dimensions).
has_length(x, n = NULL)
is_empty(x)
x |
A |
n |
A length-one |
A logical
scalar.
Other predicates:
is_scalar
,
predicate-data
,
predicate-matrix
,
predicate-names
,
predicate-numeric
,
predicate-trend
,
predicate-type
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