Lists

Collections are a central feature of any programming language. They allow storing multiple values – such as your list of favorite books – in one convenient data structure which can then be stored and accessed with a single variable.

The fundamental collection types you’ll master in the following lessons are:

• Lists
• Sets
• Arrays*
• Maps

*Arrays are not part of the actual Collections API but are included here because they’re also a data structure for storing multiple elements.

Creating a List #

Kotlin provides three convenient functions to initialize lists: