TwoWayIdentityDictionary: table of contents
Classes | Collections > Unordered

TwoWayIdentityDictionary : Collection : Object

associative collection mapping keys to values and back
Subclasses: ObjectTable


Similar to IdentityDictionary, but allows to go efficiently from element to key and back. The contents of a TwoWayIdentityDictionary are unordered. You must not depend on the order of items.

Class Methods

Inherited class methods

Undocumented class methods

Instance Methods


Find the key for a given object. If object is not element of the dictionary, it returns nil.

Inherited instance methods

Undocumented instance methods




.printItemsOn(stream, itemsPerLine: 5)

.put(key, obj)



.storeItemsOn(stream, itemsPerLine: 5)


a =;
a.put(\test, 999);
a.put(["some", "strings"], 1200);\test);
a.getID(888); // nil