Check numeric objects:
is_zero() checks if an object contains only zeros.
is_odd() and is_even() check if a number is odd or even, respectively.
is_positive() and is_negative check if an object contains only
(strictly) positive or negative numbers.
is_whole() checks if an object only contains whole numbers.
is_zero(x, tolerance = sqrt(.Machine$double.eps), ...)is_odd(x, ...)
is_even(x, ...)
is_positive(x, strict = FALSE, ...)
is_negative(x, strict = FALSE, ...)
is_whole(x, tolerance = sqrt(.Machine$double.eps), ...)
A logical vector.
Other predicates:
is_scalar,
predicate-attributes,
predicate-data,
predicate-matrix,
predicate-names,
predicate-trend,
predicate-type