1. Empty values always should be validate when rule using separately. For example, `(new Number())->validate('')->isValid()` should return `false`. 2. Validate or not validate value should be decided not at rule level, but above (maybe validator or form). 3. Check on empty can be differenet in cases. For example, `null` is empty, but empty string `''` is not empty.
Empty values always should be validate when rule using separately. For example,
(new Number())->validate('')->isValid()should returnfalse.Validate or not validate value should be decided not at rule level, but above (maybe validator or form).
Check on empty can be differenet in cases. For example,
nullis empty, but empty string''is not empty.