Collections

Learn about the various types of collections that exist in Kotlin including lists, sets, and maps.

Key Concepts

Review core concepts you need to learn to master this subject

Immutable Lists

Mutable Lists

Accessing List Elements

The Size Property

List Operations

Immutable Sets

Mutable Sets

Accessing Set Elements

var programmingLanguages = listOf("C#", "Java", "Kotlin", "Ruby")

An immutable list represents a group of elements with read-only operations.

It can be declared with the term listOf, followed by a pair of parentheses containing elements that are separated by commas.

Lists

Lesson 1 of 3

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