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Kotlin Programming: The Big Nerd Ranch Guide, First Edition
book

Kotlin Programming: The Big Nerd Ranch Guide, First Edition

by Josh Skeen, David Greenhalgh
July 2018
Intermediate to advanced content levelIntermediate to advanced
400 pages
12h 14m
English
Big Nerd Ranch Guides
Content preview from Kotlin Programming: The Big Nerd Ranch Guide, First Edition

Sets

Lists, as you have seen, allow duplicate elements (and are ordered, so duplicates – and other elements – can be identified by their position). But sometimes you want a collection that guarantees that its items are unique. For that, you use a Set.

Sets are like Lists in many ways. They use the same iteration functions, and Set also comes in read-only and mutable flavors.

But there are two major differences between lists and sets: The elements of a set are unique, and a set does not provide index-based mutators, because the items in a set are not guaranteed to be in any particular order. (That said, you can still read an element at a particular index, which we will discuss shortly.)

Creating a set

Just as you can ...

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Publisher Resources

ISBN: 9780135165188