derpycoder/pragmatic-design-patterns

Design Patterns done in a Pragmatic way!

Pragmatic Design Patterns

Design Patterns done in a Pragmatic way!

Objectives

1. OOP
2. Creational Patterns
3. Structural Patterns
4. Behavioral Patterns

Cheat Sheet

OOP

• S - Single Responsibility

• O - Open-Closed - Open for Extension, but Closed for Modification

• L - Liskov Substitution - Child Class should be able to stand for their parents

• I - Interface Segregation - Many specific interface better than one do-it-all interface

• D - Dependency Inversion - We should program towards interface not implementation

• Interface

• Null Pattern - Consider using the null pattern wherever possible, like in following cheatsheets

Creational Patterns - Deals with Object Creation

• Singleton
• Builder
• Factory
• Abstract Factory

Structural Patterns - Deals with Relations between Objects

• Adapter
• Decorator

Behavioral Patterns - Deals with Object Interaction and Responsibility

• Strategy
• Observer
• Command
• Template
• Iterator