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Design Patterns

  • A design pattern is a general repeatable solution to a commonly occurring problem in software design.
  • It is a description or template for how to solve a problem that can be used in many different situations.

Types of Design Patterns

  1. Creational design patterns - These patterns are all about Class instantiation. eg: Factory, Build, Singleton, Protoype, etc.
  2. Structural design patterns - These patterns are all about Class and Object composition. eg: Adapter, Bridge, Composite, Facade, Proxy, etc.
  3. Behavioural design patterns - These design patterns are all about Class's objects communication. eg: Strategy, Observer Patterns, etc.