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Scala

PRACTICAL FUNCTIONAL PROGRAMMING

FOR THE JVM

Learning

Jason Swartz

Learning Scala

Why learn Scala? You don’t need to be a data scientist or distributed

computing expert to appreciate this object-oriented functional programming

language. This practical book provides a comprehensive yet approachable

introduction to the language, complete with syntax diagrams, examples, and

exercises. You’ll start with Scala's core types and syntax before diving into

higher-order functions and immutable data structures.

Author Jason Swartz demonstrates why Scala’s concise and expressive

syntax make it an ideal language for Ruby or Python developers who want

to improve their craft, while its type safety and performance ensures that

it’s stable and fast enough for any application.

■

Whether you're

“

experienced in Python

or more familiar with

Java, you'll find this book

a friendly introduction

to Scala. Jason's

writing is practical and

approachable; Learning

Scala provides a clear

beginner's guide by

combining a familiar

object-oriented style with

idiomatic features of the

language. It's the book

I wish I had when I first

started!

Learn about the core data types, literals, values, and variables

Discover how to think and write in expressions, the foundation

for Scala's syntax

Write higher-order functions that accept or return other

functions

Become familiar with immutable data structures and easily

transform them with type-safe and declarative operations

Create custom infix operators to simplify existing operations or

even to start your own domain-specific language

Build classes that compose one or more traits for full

reusability, or create new functionality by mixing them in at

instantiation

■

”

Software Engineer, Comcast, Inc.

—Katherine Fellows

■

Jason Swartz

is a software developer who adores intuitive user interfaces,

expressive programming languages, and concise user documentation. He also

organizes Scala community events in San Francisco and develops applications for

Netflix’s consumer device program.

SC AL A /JAVA /PROGR AMMING L ANGUAGES

Twitter: @oreillymedia

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US $39.99

CAN $41.99

ISBN: 978-1-449-36793-0

Learning Scala

Jason Swartz

Learning Scala

by Jason Swartz

Printed in the United States of America.

Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472.

O’Reilly books may be purchased for educational, business, or sales promotional use. Online editions are

also available for most titles (http://safaribooksonline.com). For more information, contact our corporate/

institutional sales department: 800-998-9938 or

corporate@oreilly.com.

Editors:

Simon St. Laurent and Meghan Blanchette

Production Editor:

Colleen Lobner

Copyeditor:

Kim Cofer

Proofreader:

Charles Roumeliotis

December 2014:

First Edition

Indexer:

Ellen Troutman

Cover Designer:

Ellie Volckhausen

Interior Designer:

David Futato

Illustrator:

Rebecca Demarest

Revision History for the First Edition:

2014-12-08:

First release

See

http://oreilly.com/catalog/errata.csp?isbn=9781449367930

for release details.

The O’Reilly logo is a registered trademark of O’Reilly Media, Inc.

Learning Scala,

the cover image, and

related trade dress are trademarks of O’Reilly Media, Inc.

Many of the designations used by manufacturers and sellers to distinguish their products are claimed as

trademarks. Where those designations appear in this book, and O’Reilly Media, Inc. was aware of a trademark

claim, the designations have been printed in caps or initial caps.

While the publisher and the authors have used good faith efforts to ensure that the information and in‐

structions contained in this work are accurate, the publisher and the authors disclaim all responsibility for

errors or omissions, including without limitation responsibility for damages resulting from the use of or

reliance on this work. Use of the information and instructions contained in this work is at your own risk. If

any code samples or other technology this work contains or describes is subject to open source licenses or

the intellectual property rights of others, it is your responsibility to ensure that your use thereof complies

with such licenses and/or rights.

ISBN: 978-1-449-36793-0

[LSI]

For my loving wife, who foresees great prospects; and for my loving daughter, who also

foresees the first printed copy coming her way.

learning_scala.pdf

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