On Mon, 24 Apr 2023 21:39:43 GMT, Stuart Marks <sma...@openjdk.org> wrote:
>> PR for Sequenced Collections implementation. > > Stuart Marks has updated the pull request with a new target base due to a > merge or a rebase. The pull request now contains 96 commits: > > - Merge branch 'master' into JDK-8266571-SequencedCollections > - Optimizations for ReverseOrderListView; check indexes in reversed domain. > - Wording tweaks to SequencedMap / NavigableMap. > - Change "The implementation in this class" to "... interface." > - Delegate more methods in the views of ReverseOrderSortedMapView. > - Add missing @throws and @since tags. > - Convert code samples to snippets. > - Various editorial changes. > - Fix up toArray(T[]) on reverse-ordered views. > - Remove unnecessary 'final' from a couple places. > - ... and 86 more: https://git.openjdk.org/jdk/compare/2ea62c13...2827aa69 Backwards compatibility is indeed an issue. Nevertheless, it feels like there ought to be some way to navigate backwards and forwards during iteration. `AbstractSequentialList.listIterator(int)` provides this functionality, even though usage of this method isn't always efficient. In many cases, a SequencedCollection is backed by a doubly linked list. It's up to the user to understand performance implications. Maybe add new method `SequencedCollection.listIterator()`? ------------- PR Comment: https://git.openjdk.org/jdk/pull/7387#issuecomment-1645914406
