Get Programming with Scala

31 Working with List: Filtering

After reading this lesson, you will be able to

• Remove or select items from a sequence based on their position
• Filter elements of a list that respect a given predicate
• Remove duplicated items in a sequence

In the previous lesson, you learned how to select a single element in a sequence based on its position or features. In this lesson, you’ll continue to discover other operations you can perform on an instance of List. You’ll see how to create a new list from an existing one by selecting one of its subsections. You’ll discover how to pick elements that have specific characteristics. Finally, you’ll learn how to create a new sequence that contains no duplicated items. In the capstone, you’ll use these operations ...