The first sorted array to evaluate.
The second sorted array to evaluate.
The evaluation predicate, which should return true if e1 is less than e2 and false if not. This predicate may be any callable type.
A new array containing the elements in setA that are not in setB.
Returns a new array containing all elements in setA which are not present in setB. Both setA and setB are required to be sorted. Comparisons will be performed using the supplied predicate or '<' if none is supplied.