Learning Ruby by Fitzgerald, Michael -- Read -- Imperial Library of Trantor

Index

Learning Ruby

A Note Regarding Supplemental Files Preface

Who Should Read This Book? How This Book Works About the Examples How This Book Is Organized Conventions Used in This Book Comments and Questions Safari® Enabled Acknowledgments

1. Ruby Basics

Hello, Matz

A Very Short Ruby Program Shebang! Issue a System Command Appending a String Multiply Inserting a Shell Command Using a Variable Expression Substitution Formatting a String The eval Method and -e Option Getting Input from the Keyboard Methods The block The each Method The proc XML The Class The Tk Toolkit Editing and Running Ruby in TextMate

Interactive Ruby Resources Installing Ruby

Installing Ruby on Mac OS X Tiger Installing Ruby on Windows with the One-Click Installer Installing Ruby on Windows with Binaries Installing Ruby on Linux

Permission Denied Associating File Types on Windows Review Questions

2. A Quick Tour of Ruby

Ruby Is Object-Oriented

The Object Class and the Kernel Module

Ruby's Reserved Words Comments Variables

Local Variables Instance Variables Class Variables Global Variables Constants Parallel Assignment

Strings

Regular Expressions

Numbers and Operators Conditional Statements Arrays and Hashes Methods

Return Values Method Name Conventions Default Arguments Variable Arguments Aliasing Methods

Blocks

The yield Statement Procs

Symbols Exception Handling Ruby Documentation Review Questions

3. Conditional Love

The if Statement

Using else and elsif The Ternary Operator

The case Statement The while Loop

Give me a break

unless and until

The loop Method The for loop

The times Method The upto Method The downto Method

Execution Before or After a Program Review Questions

4. Strings

Creating Strings

General Delimited Strings Here Documents

Concatenating Strings Accessing Strings Comparing Strings Manipulating Strings

Inserting a String in a String Changing All or Part of a String The chomp and chop Methods The delete Method Substitute the Substring Turn It Around From a String to an Array

Case Conversion

Iterating Over a String downcase, upcase, and swapcase

Managing Whitespace, etc. Incrementing Strings Converting Strings Regular Expressions 1.9 and Beyond Review Questions

5. Math

Class Hierarchy and Included Modules Converting Numbers Basic Math Operations

Division and Truncation Equality, Less Than, or Greater Than Abbreviated Assignment Operators Operators

Ranges Inquiring About Numbers

Iterating Through Blocks

More Math Methods Math Functions Rational Numbers Prime Numbers

Just for Fun

Review Questions

6. Arrays

Creating Arrays

Clear the Deck Creating an Array with a Block There's an Easier Way It Gets Even Easier

Accessing Elements Concatenation Set Operations Unique Elements Blow Your Stack Comparing Arrays Changing Elements

As a String Using shift and unshift

Deleting Elements Arrays and Blocks Sorting Things and About Face Multidimensional Arrays 1.9 and Beyond Other Array Methods Review Questions

7. Hashes

Creating Hashes Accessing Hashes Iterating over Hashes Changing Hashes

Merging Hashes Sorting a Hash Deleting and Clearing a Hash Replacing a Hash

Converting Hashes to Other Classes 1.9 and Beyond Other Hash Methods Review Questions

8. Working with Files

Directories

Looking Inside Directories The Directory Stream

Creating a New File Opening an Existing File

ARGV and ARGF Opening a URI

Deleting and Renaming Files File Inquiries Changing File Modes and Owner The IO Class Review Questions

9. Classes

Defining the Class Instance Variables Accessors Class Variables Class Methods

Singletons

Inheritance Modules public, private, or protected Review Questions

10. More Fun with Ruby

Formatting Output with sprintf Processing XML

REXML Builder

Date and Time

The Time Class The Date Class

Calendar forms

Reflection

Reflection on Variables and Constants Reflection on Methods

Using Tk Metaprogramming RubyGems Exception Handling Creating Documentation with RDoc

RDoc Basics Processing Files with RDoc

Embedded Ruby Review Questions

11. A Short Guide to Ruby on Rails

Where Did Rails Come From Why Rails?

A Full-Stack Framework Don't Repeat Yourself Convention over Configuration I Want My MVC Scripts Validation Ajax Migrations Console Environments and Testing Capistrano Rake

What Have Other Folks Done with Rails? Hosting Rails Installing Rails

Using RubyGems to install Rails

Other Installation Information

Learning Rails

Ruby Tutorials and Books

A Brief Tutorial Review Questions

A. Ruby Reference

Ruby Interpreter Ruby's Reserved Words Operators Escape Characters Predefined Variables Global Constants Regular Expressions String Unpack Directives Array Pack Directives Sprintf Flags and Field Types File Tests Time Formatting Directives RDoc Options Rake

B. Answers to Review Questions

Chapter 1 Review Questions Chapter 2 Review Questions Chapter 3 Review Questions Chapter 4 Review Questions Chapter 5 Review Questions Chapter 6 Review Questions Chapter 7 Review Questions Chapter 8 Review Questions Chapter 9 Review Questions Chapter 10 Review Questions Chapter 11 Review Questions

Glossary Index Colophon

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