Design principles are different from design patterns. In this video, discover how patterns can help you and learn how to apply design principles in your designs.
- [Instructor] Although this course … is about design patterns, … you'll also find it beneficial … to learn a set of object-oriented design principles. … These principles go beyond … the object-oriented basics you already know, … like inheritance, polymorphism, … abstraction, and encapsulation. … And these principles really give you … a set of guidelines that will help you … to avoid bad object-oriented design. … These might be designs that are too rigid, inflexible, … too fragile, too hard to understand. … You might be saying to yourself … that sounds a lot like a design pattern, … and they do share a common goal, … good object-oriented design. … But principles and patterns are different. … Principles are general guidelines … while patterns are specific design solutions … often aimed at solving common object-oriented problems. … As we see more of each, … you'll start to understand the difference. … Let's look at one example … of an important principle we'll be touching on … throughout the course, encapsulate what varies. …
- What are design patterns?
- Encapsulating code that varies with the Strategy pattern
- The limitations of inheritance
- Using the Adapter pattern
- Implementing the Observer pattern
- Extending behavior with composition and the Decorator pattern
- Encapsulating iteration with the Iterator pattern
- Object creation with the Factory Method pattern
- Using design principles to guide your object-oriented design
Skill Level Intermediate
1. Design Patterns
2. The Strategy Pattern
3. The Adapter Pattern
4. The Observer Pattern
Using the Observer pattern2m 23s
5. The Decorator Pattern
6. The Iterator Pattern
7. The Factory Patterns
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