Behavioural Design Pattern

Template Method Design Pattern: Defines the skeleton of an algorithm in a base class while allowing subclasses to override specific steps, ensuring consistent workflows with controlled flexibility.

Observer Design Pattern: Establishes a one-to-many dependency where multiple observers are automatically notified of state changes, making it ideal for event-driven systems and real-time data updates.

Delegation Design Pattern: Enables an object to hand off responsibilities to another object via a defined protocol, promoting loose coupling and reusable component behaviour, especially in UI-driven applications.

Coordinator Design Pattern: Centralizes navigation and flow control outside view controllers, resulting in cleaner architecture, improved testability, and scalable application flows.

Command Design Pattern: Encapsulates requests as objects, allowing queueing, logging, and undo/redo functionality, while fully decoupling the request sender from the action executor.

Iterator Design Pattern: Provides a standardized way to traverse collections sequentially without exposing internal data structures, supporting multiple traversal strategies with clean abstraction.

Memento Design Pattern: Captures and restores an object’s internal state without breaking encapsulation, making it essential for undo/redo operations and state recovery mechanisms.

Mediator Design Pattern: Introduces a central mediator to manage object communication, reducing inter-object dependencies and simplifying interaction logic in complex systems.