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.

A subclass of Array::Sorted and Array::Unique (and therefore also Array::Hooked).

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.

A modular, event-driven IRC client/bot Ruby gem with plugin support

Create and track parallel inheritance hierarchies. Hook parallel hierarchies (by including a module) to automatically update/register ancestry at include and extend, or update/register only manually. Manual registration permits definitions of ancestry across, for example, instances of the same type or instances of entirely different types. Implementation is provided by simple child/parent trees with an block to choose which parent. This permits a simple multiple inheritance model very similar to how Ruby handles modules. Conflicts for multiple inheritance are resolved by the parent most recently named for the block match. Used heavily by CascadingConfiguration gem (cascading-configuration) as well as by forthcoming Persistence and Magnets gems (persistence and magnets).