January 2017
Intermediate to advanced
420 pages
9h 25m
English
Content preview from Programming KotlinBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 2. Kotlin Basics
It's time to discover the fundamental building blocks in Kotlin. For those coming from a Java background, this chapter will highlight some of the key similarities and differences between Kotlin and Java, and how Kotlin's language features compare to those in Java and on the JVM. For those who are not Java programmers, these differences can be safely skipped.
In this chapter we will cover the following topics:
- Variables and values
- Control flow and expressions
- Type inference
- Smart casting
- Basic types and the Kotlin type hierarchy
Vals and vars
Kotlin has two keywords for declaring variables, val and var. The var is a mutable variable, which is, a variable that can be changed to another value by reassigning it. This is equivalent ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.