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CodeSignal

Behavioral Design Patterns

via CodeSignal

Overview

Behavioral design patterns emphasize communication between objects and the distribution of responsibilities. This course covers patterns like Observer, Strategy, and Command, helping you design systems with flexible interactions, improved maintainability, and better separation of concerns.

Syllabus

  • Lesson 1: Strategy Pattern
    • Running the Strategy Pattern Example
    • Add a new Payment Strategy
    • Fix the Ticket Booking System
    • Complete Weather Strategy Implementation
    • Implement Travel Strategies from Scratch
  • Lesson 2: Template Method Pattern
    • Understanding the Template Method Pattern
    • Customizing Template Methods
    • Fix the Sequence Order
    • Complete the Artwork Creation Template
    • Implement Game Level Manager
  • Lesson 3: Observer Pattern
    • Observer Pattern in Action
    • Fix the News Bug
    • Complete the Stock Observer
    • Implementing a Weather Alert Notification System
    • Implement Movie Observer from Scratch
  • Lesson 4: Command Pattern
    • Running the Command Pattern
    • Enhance Command Pattern Usage
    • Debugging the Remote Control
    • Commands for Game Actions
    • Command Pattern in Text Editors
  • Lesson 5: State Pattern
    • Understanding State Pattern Dynamics
    • Add an Additional State
    • Fix the State Pattern Bug
    • Superhero State Transitions
    • State Pattern from Scratch
  • Lesson 6: Applying Behavioral Patterns in a Chat Application
    • Command Pattern for Messages
    • Strategy Pattern for Notifications
    • Observer Pattern for Chat Rooms
    • Enhancing the Final Application

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