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A class diagram exemplifying the singleton pattern. In software engineering, the singleton pattern is a software design pattern that restricts the instantiation of a class to a singular instance. One of the well-known "Gang of Four" design patterns, which describes how to solve recurring problems in object-oriented software, [1] the pattern is ...
Usage in C++11. For the singleton pattern, double-checked locking is not needed: If control enters the declaration concurrently while the variable is being initialized, the concurrent execution shall wait for completion of the initialization. —
Mary Lou York, 19. Date. June 1, 1979. Charles Laverne Singleton (March 29, 1959 – January 6, 2004) was an American convicted murderer, who, at the time of his execution, lived on death row in Arkansas longer than any other state inmate. [1] He was executed in 2004 for the June 1, 1979, murder of 19-year-old Hamburg store owner Mary Lou York.
The following is a list of people executed by the U.S. state of Alabama since capital punishment was resumed in the United States in 1976. All of the 74 people (73 men and 1 woman) have been executed at the Holman Correctional Facility, near Atmore, Alabama. All executions between December 2002 and 2023 were conducted by lethal injection.
The year 2038 problem (also known as Y2038, [1] Y2K38, Y2K38 superbug or the Epochalypse [2] [3]) is a time computing problem that leaves some computer systems unable to represent times after 03:14:07 UTC on 19 January 2038. The problem exists in systems which measure Unix time —the number of seconds elapsed since the Unix epoch (00:00:00 UTC ...
Command pattern. In object-oriented programming, the command pattern is a behavioral design pattern in which an object is used to encapsulate all information needed to perform an action or trigger an event at a later time. This information includes the method name, the object that owns the method and values for the method parameters.
On death row for nearly 40 years, Singleton is the longest-serving inmate on South Carolina’s death row as of Aug. 15. Singleton’s role in the SC abortion suit Singleton’s case highlights ...
Bridge pattern. The bridge pattern is a design pattern used in software engineering that is meant to "decouple an abstraction from its implementation so that the two can vary independently", introduced by the Gang of Four. [1] The bridge uses encapsulation, aggregation, and can use inheritance to separate responsibilities into different classes .