Skip to Main Content
Kotlin Programming: The Big Nerd Ranch Guide, First Edition
book

Kotlin Programming: The Big Nerd Ranch Guide, First Edition

by Josh Skeen, David Greenhalgh
July 2018
Intermediate to advanced content levelIntermediate to advanced
400 pages
12h 14m
English
Big Nerd Ranch Guides
Content preview from Kotlin Programming: The Big Nerd Ranch Guide, First Edition

Anonymous Functions

Anonymous functions are an essential part of Kotlin. One way they are used is to allow you to easily customize how built-in functions from the Kotlin standard library work to meet your particular needs. An anonymous function lets you describe additional rules for a standard library function so that you can customize its behavior. Let’s look at an example.

One of the many functions in the standard library is count. When called on a string, count returns the total number of letters in the string. The following code counts the letters in the string "Mississippi":

    val numLetters = "Mississippi".count()
    print(numLetters)
    // Prints 11

(Here you have used dot syntax to invoke the count function. This syntax ...

Become 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,
and much more.
Start your free trial

You might also like

Kotlin Programming: The Big Nerd Ranch Guide, 2nd Edition

Kotlin Programming: The Big Nerd Ranch Guide, 2nd Edition

David Greenhalgh, Josh Skeen
Android Programming: The Big Nerd Ranch Guide, 4th Edition

Android Programming: The Big Nerd Ranch Guide, 4th Edition

Bill Phillips, Chris Stewart, Kristin Marsicano, Brian Gardner
Programming Kotlin

Programming Kotlin

Venkat Subramaniam

Publisher Resources

ISBN: 9780135165188