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  2. Constructor (object-oriented programming) - Wikipedia

    en.wikipedia.org/wiki/Constructor_(object...

    Create a new direct instance of type T. [c] Execute the creation procedure make to the newly created instance. Attach the newly initialized object to the entity x. In the first snippet below, class POINT is defined. The procedure make is coded after the keyword feature.

  3. C Sharp syntax - Wikipedia

    en.wikipedia.org/wiki/C_Sharp_syntax

    An object is created with the type as a template and is called an instance of that particular type. In C#, objects are either references or values. No further syntactical distinction is made between those in code.

  4. Creational pattern - Wikipedia

    en.wikipedia.org/wiki/Creational_pattern

    prototype pattern, which specifies the kind of object to create using a prototypical instance, and creates new objects by cloning this prototype. singleton pattern, which ensures that a class only has one instance, and provides a global point of access to it. [5]

  5. Factory method pattern - Wikipedia

    en.wikipedia.org/wiki/Factory_method_pattern

    According to Design Patterns: Elements of Reusable Object-Oriented Software: "Define an interface for creating an object, but let subclasses decide which class to instantiate. Factory method lets a class defer instantiation to subclasses." [2] Creating an object often requires complex processes not appropriate to include within a composing object.

  6. Prototype pattern - Wikipedia

    en.wikipedia.org/wiki/Prototype_pattern

    It is used when the types of objects to create is determined by a prototypical instance, which is cloned to produce new objects. This pattern is used to avoid subclasses of an object creator in the client application, like the factory method pattern does, and to avoid the inherent cost of creating a new object in the standard way (e.g., using ...

  7. Lazy initialization - Wikipedia

    en.wikipedia.org/wiki/Lazy_initialization

    Using a factory method to create instances of a class (factory method pattern) Storing the instances in a map, and returning the same instance to each request for an instance with same parameters (multiton pattern) Using lazy initialization to instantiate the object the first time it is requested (lazy initialization pattern)

  8. Null object pattern - Wikipedia

    en.wikipedia.org/wiki/Null_object_pattern

    C# is a language in which the null object pattern can be properly implemented. This example shows animal objects that display sounds and a NullAnimal instance used in place of the C# null keyword. The null object provides consistent behaviour and prevents a runtime null reference exception that would occur if the C# null keyword were used instead.

  9. Object lifetime - Wikipedia

    en.wikipedia.org/wiki/Object_lifetime

    In many contexts, including C++, C# and Java, an object is created via special syntax like new typename(). In C++, that provides manual memory management, an object is destroyed via the delete keyword. In C# and Java, with no explicit destruction syntax, the garbage collector destroys unused objects automatically and non-deterministically.