loudo-ds-reversible

Interface defining reversible data structures, such as arrays.

Reversible

The Reversible interface provides the following:

• first: Returns the first element in the data structure, or undefined if the data structure is empty.
• last: Returns the last element in the data structure, or undefined if the data structure is empty.
• reversed: Returns a view of the data structure whose iterators return the data structure's elements in reverse order.

Note that reversed returns a view, meaning that changes to the original data structure are reflected in the original and vice-versa. The view has a separate list of event handlers than the original, but changes to either will fire events for both. When events are fired in a reversed view, their indices are reversed.