konstruksjonsmønster

Konstruksjonsmønster refers to a design pattern used in software engineering. It is a general, reusable solution to a commonly occurring problem within a given context in software design. These patterns are not finished designs that can be directly transformed into code, but rather descriptions or templates for how to solve a problem that can be used in many different situations. The term "konstruksjonsmønster" is a Norwegian translation of the English term "creational pattern."

Creational patterns are a category of design patterns that deal with object creation mechanisms, trying to create objects in a manner suitable to the situation. They are concerned with the process of object creation. This can lead to more flexible and reusable code by decoupling the client code from the concrete classes being instantiated. Common creational patterns include Singleton, Factory Method, Abstract Factory, Builder, and Prototype.

Singleton ensures that a class only has one instance and provides a global point of access to it. Factory Method defines an interface for creating an object, but lets subclasses decide which class to instantiate. Abstract Factory provides an interface for creating families of related or dependent objects without specifying their concrete classes. Builder separates the construction of a complex object from its representation, allowing the same construction process to create different representations. Prototype allows objects to be created by copying an existing object, often referred to as a prototype.

Understanding and applying konstruksjonsmønstre can significantly improve the design and maintainability of software systems by promoting principles like separation of concerns and adherence to the Open/Closed Principle. They are fundamental tools for experienced software developers.