Object Design: Collections

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A collection of data is an object that stores a variable number of other objects, allowing access to them as a group (enumerator methods) and singly (objectAt…: methods). Various different kinds of collection exist, to cover a range of needs; there are also different ways of implementing them, with differing efficiencies in memory use, retrieval time, insertion time, etc.

Information about collection designs on this site: [Topic]