Event-hooked Array, Sorted Array, Unique Array, Sorted-Unique Array, Downward-Compositing Array, Downward-Compositing Sorted Array, Downward-Compositing Unique Array, Downward-Compositing Sorted-Unique Array.

An implementation of Array that permits chaining, where children inherit changes to parent and where parent settings can be overridden in children, and that retains sorted order, ensuring inserted values are unique.