Design
patterns provide the solution to software design problems that evolved from object-oriented programming. Basically, design patterns are reusable for
the design and the object.
Implementing
design patterns in our applications is proven and tested. Writing the code and
aligning it with design patterns will make our applications very Reliable,
Scalable, and Maintainable.
What
are the Design Patterns
Design
patterns are a reusable solution for the design and the object interaction for
the problems that occur repeatedly in application development. It’s basically a
template or you can say description of how to solve problems that can be reusable
or we can say we can use it in many situations.
A gang of four (Gof) are
those who brought the concept of design patterns. The design
pattern is “Elements of Reusable Object-Oriented
software “.
Gang of Four
has divided the book into two parts with the first part explaining the pros
and cons of object-oriented programming and the second part describing the
evolution of 23 classic software design patterns.
For more details, please refer to the following Wikipedia article
https://en.wikipedia.org/wiki/Design_Patterns
For more details, please refer to the following Wikipedia article
https://en.wikipedia.org/wiki/Design_Patterns
Types of Design Patterns
Gang of Four has categorized the design patterns into 3 types based on different problems encountered in real-world applications. They are Creational, Structural, and Behavioural.
Gang of Four has categorized the design patterns into 3 types based on different problems encountered in real-world applications. They are Creational, Structural, and Behavioural.
Creational
Design Pattern
These patterns deal with object creation and initialization. The creational pattern gives the program more flexibility in deciding which objects
need to be created for a given case.
- Singleton
- Factory design pattern
- Factory Method design pattern
- Abstract
Factory
- Builder
- Fluent Interface Design Pattern in C# with Examples
- Prototype design pattern
Structural
Design Patterns
This pattern deals with class and object composition. In
simple words, This pattern focuses on the decoupling interface and implementation of
classes and their objects.
- Adapter
- Bridge
- Composite
- Decorator
- Facade
- Flyweight
- Proxy
Behavioral
Design Patterns
These patterns deal with communication between Classes and
objects. `
- Chain
of Responsibility
- Command
- Interpreter
- Iterator
- Mediator
- Memento
- Observer
- State
- Strategy
- Visitor
- Template
Method
