All the data sitting in RAM, stored on disk drives and flowing through circuit boards and buses are nothing more than sequences of 1s and 0s. Binary systems work in terms of 0 and 1, true or false, set and unset. When we look at the different types of software that run on computer systems and mobile devices, from financial applications to graphics intensive games, it is easy to forget that computers are really just binary machines. Before starting this chapter, therefore, open a browser window, navigate to and use the playground to try out the code in both this and the other Kotlin introductory chapters that follow. This will also include an explanation of constants, variables, type casting and Kotlin’s handling of null values.Īs outlined in the previous chapter, entitled “An Introduction to Kotlin” a useful way to experiment with the language is to use the Kotlin online playground environment. This chapter will focus on the various data types available for use within Kotlin code. Purchase the fully updated Android Studio Electric Eel Kotlin Edition of this publication in eBook ($29.99) formatĪndroid Studio Electric Eel Essentials - Kotlin Edition eBook (PDF/ePub, Kindle) edition contains 93 chapters and over 820 pagesīoth this and the following few chapters are intended to introduce the basics of the Kotlin programming language. You are reading a sample chapter from the Android Studio 3.0 / Android 8 Edition book.
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