Learning Scala by Swartz, Jason -- Read -- Imperial Library of Trantor

Index

Learning Scala Dedication Preface

Who This Book Is For Why Write “Learning Scala”? Why Learn Scala (or, Why Should You Read “Learning Scala”)?

Reason 1—Your Code Will Be Better Reason 2—You’ll Be a Better Engineer Reason 3—You’ll Be a Happier Engineer

Why Learning Scala May Not Be for You About the Syntax Notation in This Book Conventions Used in This Book Using Code Examples Safari® Books Online How to Contact Us Acknowledgments

I. Core Scala

1. Getting Started with the Scalable Language

Installing Scala Using the Scala REPL Summary Exercises

2. Working with Data: Literals, Values, Variables, and Types

Values Variables Naming Types

Numeric Data Types Strings

String interpolation Regular expressions

An Overview of Scala Types

Type operations

Tuples

Summary Exercises

3. Expressions and Conditionals

Expressions

Defining Values and Variables with Expressions Expression Blocks Statements

If..Else Expression Blocks

If Expressions If-Else Expressions

Match Expressions

Matching with Wildcard Patterns Matching with Pattern Guards Matching Types with Pattern Variables

Loops

Iterator Guards Nested Iterators Value Binding While and Do/While Loops

Summary Exercises

4. Functions

Procedures Functions with Empty Parentheses Function Invocation with Expression Blocks Recursive Functions Nested Functions Calling Functions with Named Parameters Parameters with Default Values Vararg Parameters Parameter Groups Type Parameters Methods and Operators Writing Readable Functions Summary Exercises

5. First-Class Functions

Function Types and Values Higher-Order Functions Function Literals Placeholder Syntax Partially Applied Functions and Currying By-Name Parameters Partial Functions Invoking Higher-Order Functions with Function Literal Blocks Summary Exercises

6. Common Collections

Lists, Sets, and Maps What’s in a List?

The Cons Operator

List Arithmetic Mapping Lists Reducing Lists Converting Collections

Java and Scala Collection Compatibility

Pattern Matching with Collections Summary Exercises

7. More Collections

Mutable Collections

Creating New Mutable Collections Creating Mutable Collections from Immutable Ones Using Collection Builders

Arrays Seq and Sequences Streams Monadic Collections

Option Collections

Extracting values from Options

Try Collections Future Collections

Handling futures asynchronously Handling futures synchronously

Summary Exercises

II. Object-Oriented Scala

8. Classes

Defining Classes More Class Types

Abstract Classes Anonymous Classes

More Field and Method Types

Overloaded Methods Apply Methods Lazy Values

Packaging

Accessing Packaged Classes Packaging Syntax

Privacy Controls Privacy Access Modifiers Final and Sealed Classes Summary Exercises

9. Objects, Case Classes, and Traits

Objects

Apply Methods and Companion Objects Command-Line Applications with Objects

Case Classes Traits

Self Types Instantiation with Traits

Importing Instance Members Summary Break—Configuring Your First Scala Project Exercises

10. Advanced Typing

Tuple and Function Value Classes Implicit Parameters Implicit Classes Types

Type Aliases Abstract Types Bounded Types Type Variance Package Objects

Summary Questions

A. Reserved Words

Index About the Author Colophon Copyright

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