MultiLevelIdentityDictionary

superclass: Collection

A tree of IdentityDictionaries.  Addresses within the tree are specified with a series of keys.  Library is its most useful subclass.

at(key1,key2 ... keyN)

retrieves a leaf node or nil if not found.

put(key1,key2 ... keyN, item)

puts the item as a leaf node, internally creating new branches as needed to accommodate the list of keys.

choose

choose a branch at each level, descend the tree until a leaf is chosen.

choose(key1,key2 ... keyN)

starting at an address within the tree, descend the tree until a leaf is chosen.

putTree(key1,[

key2a, item1-2a,

key2b, item1-2b,

[

key3, item1-3

] // etc...

]);

A way to insert objects into the tree with a syntax similar to the organization of the tree

itself.