Overview

Structural Patterns

describe how objects are composed to form larger subsystems.

• Model-View-Controller (MVC)

Behavioral Patterns

describe how objects communicate with each other.

• Delegation
• Strategy
• Observer
• Memento

Creational Patterns

instantiate or "create" objects for you.

• Singleton
• Builder

Class Diagrams

• Open arrow indicates inheritance, read as is a
• Pointed arrow indicates a property, read as has a
• Open arrow with a dashed line indicates a protocol conformancy
• Pointed arrow with a dashed line to indicate uses (as delegates to)