An Index is an collection of key/value pairs. Keys are typically symbols (but do not have to be).

Class Methods (see Type)

New

With no parameter, it creates an empty Index. With a single Integer, it creates a list with space for that many values.

Traits

[]

Get (or set) the element specified by the key index.

Each

Returns an closure that iterates over the Index, returning the next key and value out of the Index each time it is called.

empty?

Return true if Index has no elements

Remove

Remove the value from the Index referenced by the specified key.

size

Get the number of values held in the Index.