Design Patterns Introduction

 Design Patterns

• In software engineering, design patterns are time-tested solutions that mean general problems that are frequent to happen while you do development and there is a certain answer for that problem that falls under design patterns.
• Now, It is not a good idea to put design patterns first place without identifying the problem.
• In short, these are like templates or a blueprint of a particular problem.

When to use it?

• Design Patterns help to speed up development as they are already a proven strategy or solution.
• Refactoring code that is much more complex in nature design patterns helps to make it more reliable and maintainable.
• It has documented problems and solutions accordingly.

Types of Design Patterns

Divided by categories to help us to share more meaningful

1. Creational Patterns
• This is about class instantiation
• Also can be subdivided into class creational and objection creational patterns
• Now little talk more on class creational which uses more inheritance features of object-oriented programming
• And object creational pattern uses deligation to make them work
• Examples are Factory Pattern, Abstract Factory Pattern, Builder Pattern, Factory Method, Prototype, Singleton
2. Structural Patterns
• This is about class and object composition
• Examples are Adapter, Bridge, Composite pattern, Decorator Pattern, Facade Pattern, Proxy pattern, etc.
3. Behavioral Patterns
• This is above communication between objects
• Examples are Chain of Responsibility Pattern, Comand Pattern, Interpreter Pattern, Iterator Pattern, Observer Pattern, etc.

Will see more dedicated posts upcoming with examples to digest and re-utilize in our day-to-day programming in an effective manner.