课程: Programming Foundations: Design Patterns

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Challenge: The Iterator pattern

Challenge: The Iterator pattern

课程: Programming Foundations: Design Patterns

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Challenge: The Iterator pattern

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(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.

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