ObjektSet

Objektset is a term used primarily in computer science and software engineering to denote a collection of objects. It generally refers to a structure that stores references to objects rather than the objects themselves, allowing operations that treat the members as a group.

Semantics vary by domain. In many programming languages, a set is unordered and contains unique elements; membership tests, addition, and removal are common operations. Some systems differentiate between identity-based equality (two references refer to the same object) and value-based equality (two distinct objects with equal content are considered the same). In object-oriented contexts, ein Objektset may serve as a container for batch processing of instances of a class, a group for applying operations, or a means of modeling relationships. In databases or GIS, ein Objektset may be used to represent a collection of feature objects or records that share a type or attribute constraints.

Implementation often uses a hash table or balanced tree to provide fast membership checks, along with an underlying array or linked structure for iteration. Choices about memory management, mutability, and whether to allow duplicates depend on language and application.

Common operations include add or insert, remove, contains, size, and iteration. The concept is closely related to sets, collections, arrays, and lists, but differs in emphasis on object identity and the ability to perform bulk operations on grouped instances.

See also: set, collection, hash set, list, object, data structure.