Design Patterns


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You will discover some of the most useful, important and common design pattern, reusable code patterns that you can use to structure your program and perform common tasks. Includes lots of examples with full source code. In this course, instructor explains the purpose and effective use of 28 design patterns, including six Gang of Four design patterns. Gang of Four patterns fall under three categories: structural, creational, and behavioral. Instructor helps you learn about select patterns from each category. He describes each pattern and demonstrates how programmers can leverage them in real-world applications.

1. Creational design patterns

Creational design patterns These design patterns are all about class instantiation. This pattern can be further divided into class-creation patterns and object-creational patterns. While class-creation patterns use inheritance effectively in the instantiation process, object-creation patterns use delegation effectively to get the job done
Abstract Factory:- Creates an instance of several families of classes.
Builder:- Separates object construction from its representation.
Factory Method:-Creates an instance of several derived classes.
Object Pool:- Avoid expensive acquisition and release of resources by recycling objects that are no longer in use.
Prototype:- A fully initialized instance to be copied or cloned.
Singleton:-A class of which only a single instance can exist.

2. Structural design patterns

These design patterns are all about Class and Object composition. Structural class-creation patterns use inheritance to compose interfaces. Structural object-patterns define ways to compose objects to obtain new functionality.
Adapter:-Match interfaces of different classes
Composite:-A tree structure of simple and composite objects
Decorator:-Add responsibilities to objects dynamically
Facade :-A single class that represents an entire subsystem
Flyweight:-A fine-grained instance used for efficient sharing
Private Class Data:-Restricts access/mutator access
Proxy:-An object representing another object

3.Behavioral design patterns

These design patterns are all about Class’s objects communication. Behavioral patterns are those patterns that are most specifically concerned with communication between objects.
Chain of responsibility A way of passing a request between a chain of objects
Command Encapsulate a command request as an object
Interpreter A way to include language elements in a program
Iterator Sequentially access the elements of a collection
Mediator Defines simplified communication between classes
Memento Capture and restore an object’s internal state
Null Object Designed to act as a default value of an object
Observer A way of notifying change to a number of classes
State Alter an object’s behavior when its state changes
Strategy Encapsulates an algorithm inside a class
Template method Defer the exact steps of an algorithm to a subclass
Visitor Defines a new operation to a class without change

Course Content

Time: 10 weeks

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  • 46 hours on-demand video
  • 16 Articles
  • 39 Supplemental Resources
  • Full lifetime access
  • Language: English
  • Certificate of Completion

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