Introduction

Collections framework is useful when we want to process items in a collection. If you have worked with Java, you are probably familiar with collections framework. The most common use of collections framework are maps, sets, lists, and so on. Kotlin too has its collection framework, but it's much better than Java's collection framework because, in Kotlin, we can leverage the functional programming approach to make our code more concise and easy to work with. So, let's dive into the recipes related to Kotlin's collection framework.