Object-Oriented Programming and Design

7.

Design Patterns

7.1.

Introduction to Design Patterns

7.1.1.

Purpose and Benefits

7.1.1.1.

Reusability and Maintainability

7.1.2.

Pattern Structure

7.1.2.1.

7.1.2.2.

7.1.2.3.

7.1.2.4.

7.2.

Creational Patterns

7.2.1.

Singleton Pattern

7.2.1.1.

Ensuring Single Instance

7.2.1.2.

Thread Safety Considerations

7.2.2.

Factory Method Pattern

7.2.2.1.

Defining Interface for Object Creation

7.2.3.

Abstract Factory Pattern

7.2.3.1.

Creating Families of Related Objects

7.2.4.

Builder Pattern

7.2.4.1.

Constructing Complex Objects Step by Step

7.2.5.

Prototype Pattern

7.2.5.1.

Cloning Existing Objects

7.3.

Structural Patterns

7.3.1.

Adapter Pattern

7.3.1.1.

Converting Interfaces

7.3.2.

7.3.2.1.

Decoupling Abstraction from Implementation

7.3.3.

Composite Pattern

7.3.3.1.

Tree Structures for Part-Whole Hierarchies

7.3.4.

Decorator Pattern

7.3.4.1.

Adding Responsibilities Dynamically

7.3.5.

7.3.5.1.

Simplifying Complex Subsystems

7.3.6.

Flyweight Pattern

7.3.6.1.

Sharing Common State

7.3.7.

7.3.7.1.

Controlling Access to Objects

7.4.

Behavioral Patterns

7.4.1.

Chain of Responsibility Pattern

7.4.1.1.

Passing Requests Along Chain

7.4.2.

Command Pattern

7.4.2.1.

Encapsulating Requests as Objects

7.4.3.

Interpreter Pattern

7.4.3.1.

Defining Grammar for Interpreting Expressions

7.4.4.

Iterator Pattern

7.4.4.1.

Sequential Access to Elements

7.4.5.

Mediator Pattern

7.4.5.1.

Centralizing Complex Communications

7.4.6.

Memento Pattern

7.4.6.1.

Capturing and Restoring Object State

7.4.7.

Observer Pattern

7.4.7.1.

Notifying Dependent Objects of Changes

7.4.8.

7.4.8.1.

Altering Behavior When State Changes

7.4.9.

Strategy Pattern

7.4.9.1.

Encapsulating Algorithms

7.4.10.

Template Method Pattern

7.4.10.1.

Defining Skeleton of Algorithm

7.4.11.

Visitor Pattern

7.4.11.1.

Separating Operations from Object Structure

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