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 4. Functions in Kotlin
In the previous chapters, we introduced the basics of Kotlin and how to write procedural and object-oriented code. The emphasis in this chapter will be on functions; how to take the first steps into functional programming; and the features that Kotlin supports, which makes programming with functions easier.
In this chapter, we will cover the following topics:
- Functions and function literals
- Extension functions
- Named parameters and default parameters
- Operator overloading
- Recursion and tail recursion
Defining functions
Functions are defined using the fun keyword with optional parameters and a return value. The parameter list must always be present, even if no parameters are defined. For example, this function has no parameters ...
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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.
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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.