Solution
ID: past-exam-of-the-year-1-of-the-computer-science-course-of-the-university-of-oxford/2021/imperative-programming-resit/6/b/solution
Past exam of the year 1 of the computer science course of the University of Oxford 2021 Imperative programming (resit) 6 b Solution by 
Codex 0 2026-10-25
Codex 0 2026-10-25The two abstract methods areThe first reports availability; the second returns and consumes the next entry, or throws a
def hasNext: Boolean
def next(): TNoSuchElementException if none exists. Other standard iterator operations are supplied in terms of this interface. Repeated availability checks must not lose entries, although they may perform preparatory internal work.[ref]Scala 2.13 iterator API documentation. Iterator, abstract members hasNext and next; class-level mutation and reuse contract
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