Barely Enough Design

Explore key design principles and their impact on Test Driven Development (TDD) in this 40-minute PHP UK Conference talk. Dive into responsibility-driven design, "Tell don't ask" principle, the Law of Demeter, and Dependency Inversion. Gain insights into object-oriented programming, encapsulation, abstraction, and how to avoid inappropriate intimacy in code. Learn to make better architectural decisions, understand the importance of interfaces, and discover how to create a more flexible and maintainable codebase. Apply these concepts to improve your coding and testing practices, ultimately enhancing your ability to leverage TDD for better software design.

Introduction
The waterfall mentality
Objectoriented programming
Inappropriate intimacy
Encapsulation
Abstraction
Example
Customers
Interfaces
Decisions
Decide Later
Free Architecture
ObjectOriented Architecture
Entities
Design Encapsulation
Ward Cunningham
Process
Whiteboard
Inversion Principle
TDD
Tools
Conclusion