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In object-oriented programming, the singleton pattern is a software design pattern that restricts the instantiation of a class to a singular instance.
Whereas the singleton allows only one instance of a class to be created, the multiton pattern allows for the controlled creation of multiple instances, which it manages through the use of a map. Rather than having a single instance per application (e.g. the java.lang.Runtime object in the Java programming language ) the multiton pattern instead ...
Singleton pattern, a design pattern that allows only one instance of a class to exist; Singleton bound, used in coding theory; Singleton variable, a variable that is referenced only once; Singleton, a character encoded with one unit in variable-width encoding schemes for computer character sets
In software engineering, the initialization-on-demand holder (design pattern) idiom is a lazy-loaded singleton. In all versions of Java, the idiom enables a safe, highly concurrent lazy initialization of static fields with good performance. [1] [2]
A set such as {{,,}} is a singleton as it contains a single element (which itself is a set, but not a singleton). A set is a singleton if and only if its cardinality is 1. In von Neumann's set-theoretic construction of the natural numbers, the number 1 is defined as the singleton {}.
Date/Time Thumbnail Dimensions User Comment; current: 12:44, 13 June 2009: 500 × 300 (2 KB): Quibik: sans-serif name: 12:27, 13 June 2009: 500 × 300 (2 KB): Quibik: Added size attribute to diagram name, so it would look like was originally intended.
In coding theory, the Singleton bound, named after Richard Collom Singleton, is a relatively crude upper bound on the size of an arbitrary block code with block length , size and minimum distance . It is also known as the Joshibound [ 1 ] proved by Joshi (1958) and even earlier by Komamiya (1953) .
Unity is the state of being as one (either literally or figuratively). It may also refer to: Buildings. Unity Building, Oregon, Illinois, US; a historic building;