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  • Introduction
  • Installation
    • What is Ruby?
    • How Ruby can help you, in more detail
    • Downloading Ruby and an Editor
    • Ruby Programming Environment
  • First Ruby Program
  • Features
  • Numbers in Ruby
    • Operators and Precedence
    • Difference between or and || operator
  • Fun with Strings
  • Variables and Assignment
  • Summary 1
  • Scope
    • Global scope and global variables
    • Built-in global variables
    • Local scope
  • Getting Input
  • Names in Ruby
  • More on Ruby Methods
  • Writing own Ruby Methods
    • Bang (!) methods
    • Method names ending with ?
  • Summary 2
  • Method Missing
  • Ruby ri Tool
  • More on Strings
    • Listing all methods of a class or object
    • Comparing two strings for equality
    • Using %w
  • Simple Constructs
    • Conditional ?:
    • Statement modifiers
    • Case Expressions
    • nil is an Object
    • Some Additional Information
  • Ruby Blocks and Procs
  • Summary 3
  • Ruby Arrays
  • Ranges
  • Ruby Symbols
  • Hashes
    • Using Symbols as Hash Keys
  • Random Numbers
  • Read/Write files
    • Traversing Directory Trees
    • Random Access
  • Summary 4
  • Regular Expressions
    • Literal characters
    • The wildcard character . (dot)
    • Character classes
    • Special escape sequences for common character classes
  • Writing our own Class
    • Literal Constructors
    • Garbage Collection
    • Class Methods
  • Including Other Files
  • Ruby Open Classes
  • Inheritance
  • Overriding Methods
    • Usage of super
    • Redefining methods
  • Ruby Overloading Methods
  • Summary 5
  • Access Control
    • Top-level methods
    • Are instance variables inherited by a sub-class?
  • Ruby Time class
  • Summary 6
  • Exceptions
    • Raising an Exception
    • Handling an Exception
  • Duck Typing
  • Ruby Syntactic Sugar
  • Mutable and Immutable Objects
    • Freezing Objects
  • Summary 7
  • Object Serialization
  • Constants
  • Summary 8
  • Modules/Mixins
  • Self
    • The current/default object
    • Top level context
    • Self inside class and module definitions
    • Self in instance method definitions
    • Self in singleton-method and class-method definitions
  • Summary 9
  • Socket Programming
    • Basic Networking
    • Port
    • Internet Addresses
    • Sockets
    • Socket classes
    • Threads
    • The Date Time Server and Client
  • SMTP class
  • Web services
    • Writing a RubyLearning SOAP server and client
  • Ruby MySQL Tutorial
  • Ruby on Rails
    • MVC
    • Installation
    • Useful Rails Links
  • Ruby ActiveRecord and MySQL
  • Ruby/Tk
    • Simple Tk applications
    • Logger class
  • Unit Testing
  • Ruby Tools
    • irb
    • The debugger
    • Profiling
    • ri and RDoc
    • ERb
  • Java to Ruby
    • Similarities
    • Differences
  • JRuby Tutorial
    • What is JRuby?
    • Download and Setup
    • Where to use JRuby
    • Resources
    • Useful Articles
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