Creating a List

Constructing Lists Using :: and nil

Appending Elements

Prepending Elements

List Concatenation

Head & Tail

ListBuffer

Introduction

A List in Scala is a collection which comes under the Seq class. It is an immutable collection and hence when modified the original List does not get updated, rather, a new List is created.

Like Arrays and ArrayBuffers, Lists store elements of the same type.

Creating a List

Lists can be created and populated in multiple different ways, most of which are identical to the approaches we went over when discussing Arrays. Let’s quickly go over them.