This challenge will require a little research and the iterator from your favorite language.
(energetic music) … - [Narrator] It's time for another challenge. … For the iterator pattern, … we're going to try something a little different. … For this challenge, you'll need to do a little research … before writing code. … Most modern programming languages … incorporate the iterator pattern. … So it's valuable to learn how the iterator pattern is used … in languages that are important to you. … So pick one of your favorite programming languages. … In that language, identify how the Iterator pattern … is used to iterate over collections of objects. … You might have to do a little bit of research … to figure out which types are iterable, … and what statements are used to iterate … over those types of objects. … After you've done your research, … implement a small code example to iterate … through an aggregate object like an array or a list … in the language of your choice. … …
- 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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