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Index
Preface
Life Is Short Audience The Structure of This Book How the Code Listings Work Installing the Software Platform Differences, Version Differences, and Other Headaches Other Resources Conventions Used in This Book Using Code Examples Comments and Questions Acknowledgments
1. Ruby 2.1
1.1. What’s Different Between Ruby 1.8 and 2.1?
Problem Solution
1.2. YARV (Yet Another Ruby VM) Bytecode Interpreter
Problem Solution Discussion See Also
1.3. Syntax Changes
Problem Solution See Also
1.4. Keyword Arguments
Problem Solution Discussion
1.5. Performance Enhancements
Problem Solution See Also
1.6. Refinements
Problem Solution Discussion
1.7. Debugging with DTrace and TracePoint
Problem Solution Discussion See Also
1.8. Module Prepending
Problem Solution Discussion See Also
1.9. New Methods
Problem Solution See Also
1.10. New Classes
Problem Solution See Also
1.11. New Standard Libraries
Problem Solution See Also
1.12. What’s Next?
Problem Solution See Also
2. Strings
2.1. Building a String from Parts
Problem Solution Discussion
2.2. Substituting Variables into Strings
Problem Solution Discussion See Also
2.3. Substituting Variables into an Existing String
Problem Solution Discussion See Also
2.4. Reversing a String by Words or Characters
Problem Solution Discussion See Also
2.5. Representing Unprintable Characters
Problem Solution Discussion
2.6. Converting Between Characters and Values
Problem Solution Discussion See Also
2.7. Converting Between Strings and Symbols
Problem Solution Discussion See Also
2.8. Processing a String One Character at a Time
Problem Solution Discussion See Also
2.9. Processing a String One Word at a Time
Problem Solution Discussion See Also
2.10. Changing the Case of a String
Problem Solution Discussion See Also
2.11. Managing Whitespace
Problem Solution Discussion
2.12. Testing Whether an Object Is String-Like
Problem Solution Discussion See Also
2.13. Getting the Parts of a String You Want
Problem Solution Discussion See Also
2.14. Word-Wrapping Lines of Text
Problem Solution Discussion See Also
2.15. Generating a Succession of Strings
Problem Solution Discussion See Also
2.16. Matching Strings with Regular Expressions
Problem Solution Discussion See Also
2.17. Replacing Multiple Patterns in a Single Pass
Problem Solution Discussion See Also
2.18. Validating an Email Address
Problem Solution Discussion
Check validity, not correctness
See Also
2.19. Classifying Text with a Bayesian Analyzer
Problem Solution Discussion See Also
3. Numbers
3.1. Parsing a Number from a String
Problem Solution Discussion See Also
3.2. Comparing Floating-Point Numbers
Problem Solution Discussion See Also
3.3. Representing Numbers to Arbitrary Precision
Problem Solution Discussion See Also
3.4. Representing Rational Numbers
Problem Solution Discussion See Also
3.5. Generating Random Numbers
Problem Solution Discussion See Also
3.6. Converting Between Numeric Bases
Problem Solution Discussion See Also
3.7. Taking Logarithms
Problem Solution Discussion See Also
3.8. Finding Mean, Median, and Mode
Problem Solution Discussion
The standard deviation
See Also
3.9. Converting Between Degrees and Radians
Problem Solution Discussion See Also
3.10. Multiplying Matrices
Problem Solution Discussion See Also
3.11. Solving a System of Linear Equations
Problem Solution Discussion See Also
3.12. Using Complex Numbers
Problem Solution Discussion See Also
3.13. Simulating a Subclass of Fixnum
Problem Solution Discussion See Also
3.14. Doing Math with Roman Numbers
Problem Solution Discussion See Also
3.15. Generating a Sequence of Numbers
Problem Solution Discussion See Also
3.16. Generating Prime Numbers
Problem Solution Discussion
Checking primality
See Also
3.17. Checking a Credit Card Checksum
Problem Solution Discussion See Also
4. Date and Time
4.1. Finding Today’s Date
Problem Solution Discussion See Also
4.2. Parsing Dates, Precisely or Fuzzily
Problem Solution Discussion See Also
4.3. Printing a Date
Problem Solution Discussion See Also
4.4. Iterating Over Dates
Problem Solution Discussion See Also
4.5. Doing Date Arithmetic
Problem Solution Discussion See Also
4.6. Counting the Days Since an Arbitrary Date
Problem Solution Discussion See Also
4.7. Converting Between Time Zones
Problem Solution Discussion See Also
4.8. Checking Whether Daylight Saving Time Is in Effect
Problem Solution Discussion See Also
4.9. Converting Between Time and DateTime Objects
Problem Solution Discussion See Also
4.10. Finding the Day of the Week
Problem Solution Discussion See Also
4.11. Handling Commercial Dates
Problem Solution Discussion See Also
4.12. Running a Code Block Periodically
Problem Solution Discussion See Also
4.13. Waiting a Certain Amount of Time
Problem Solution Discussion
Waking up early
See Also
4.14. Adding a Timeout to a Long-Running Operation
Problem Solution Discussion See Also
5. Arrays
5.1. Iterating Over an Array
Problem Solution Discussion See Also
5.2. Rearranging Values Without Using Temporary Variables
Problem Solution Discussion
5.3. Stripping Duplicate Elements from an Array
Problem Solution Discussion
5.4. Reversing an Array
Problem Solution Discussion See Also
5.5. Sorting an Array
Problem Solution Discussion See Also
5.6. Ignoring Case When Sorting Strings
Problem Solution Discussion See Also
5.7. Making Sure a Sorted Array Stays Sorted
Problem Solution Discussion See Also
5.8. Summing the Items of an Array
Problem Solution Discussion See Also
5.9. Sorting an Array by Frequency of Appearance
Problem Solution Discussion See Also
5.10. Shuffling an Array
Problem Solution Discussion See Also
5.11. Getting the N Smallest Items of an Array
Problem Solution Discussion See Also
5.12. Building a Hash from an Array
Problem Solution Discussion References
5.13. Extracting Portions of Arrays
Problem Solution Discussion See Also
5.14. Computing Set Operations on Arrays
Problem Solution Discussion
Complement Cartesian product
See Also
5.15. Partitioning or Classifying a Set
Problem Solution Discussion
Implementation for arrays
6. Hashes
6.1. Using Symbols as Hash Keys
Problem Solution Discussion See Also
6.2. Creating a Hash with a Default Value
Problem Solution Discussion See Also
6.3. Adding Elements to a Hash
Problem Solution Discussion See Also
6.4. Removing Elements from a Hash
Problem Solution Discussion See Also
6.5. Using an Array or Other Modifiable Object as a Hash Key
Problem Solution Discussion See Also
6.6. Keeping Multiple Values for the Same Hash Key
Problem Solution Discussion See Also
6.7. Iterating Over a Hash
Problem Solution Discussion
Using an array as intermediary
See Also
6.8. Iterating Over a Hash in Insertion Order
Problem Solution Discussion See Also
6.9. Printing a Hash
Problem Solution Discussion See Also
6.10. Inverting a Hash
Problem Solution Discussion See Also
6.11. Choosing Randomly from a Weighted List
Problem Solution Discussion See Also
6.12. Building a Histogram
Problem Solution Discussion See Also
6.13. Remapping the Keys and Values of a Hash
Problem Solution Discussion See Also
6.14. Extracting Portions of Hashes
Problem Solution Discussion See Also
6.15. Searching a Hash with Regular Expressions
Problem Solution Discussion
7. Files and Directories
7.1. Checking to See If a File Exists
Problem Solution Discussion See Also
7.2. Checking Your Access to a File
Problem Solution Discussion setuid and setgid Scripts See Also
7.3. Changing the Permissions on a File
Problem Solution Discussion See Also
7.4. Seeing When a File Was Last Used
Problem Solution Discussion See Also
7.5. Listing a Directory
Problem Solution Discussion See Also
7.6. Reading the Contents of a File
Problem Solution Discussion See Also
7.7. Writing to a File
Problem Solution Discussion Buffered I/O See Also
7.8. Writing to a Temporary File
Problem Solution Discussion
7.9. Picking a Random Line from a File
Problem Solution Discussion See Also
7.10. Comparing Two Files
Problem Solution Discussion See Also
7.11. Performing Random Access on “Read-Once” Input Streams
Problem Solution Discussion See Also
7.12. Walking a Directory Tree
Problem Solution Discussion See Also
7.13. Locking a File
Problem Solution Discussion Nonblocking Locks See Also
7.14. Backing Up to Versioned Filenames
Problem Solution Discussion See Also
7.15. Pretending a String Is a File
Problem Solution Discussion See Also
7.16. Redirecting Standard Input or Output
Problem Solution Discussion See Also
7.17. Processing a Binary File
Problem Solution Discussion An MP3 Example See Also
7.18. Deleting a File
Problem Solution Discussion
7.19. Truncating a File
Problem Solution Discussion
7.20. Finding the Files You Want
Problem Solution Discussion See Also
7.21. Finding and Changing the Current Working Directory
Problem Solution Discussion See Also
8. Code Blocks and Iteration
8.1. Creating and Invoking a Block
Problem Solution Discussion See Also
8.2. Writing a Method That Accepts a Block
Problem Solution Discussion See Also
8.3. Binding a Block Argument to a Variable
Problem Solution Discussion See Also
8.4. Blocks as Closures: Using Outside Variables Within a Code Block
Problem Solution Discussion
8.5. Writing an Iterator Over a Data Structure
Problem Solution Discussion See Also
8.6. Changing the Way an Object Iterates
Problem Discussion Discussion See Also
8.7. Writing Block Methods That Classify or Collect
Problem Solution Discussion See Also
8.8. Stopping an Iteration
Problem Solution Discussion See Also
8.9. Looping Through Multiple Iterables in Parallel
Problem Solution Discussion See Also
8.10. Hiding Setup and Cleanup in a Block Method
Problem Solution Discussion See Also
8.11. Coupling Systems Loosely with Callbacks
Problem Solution Discussion
9. Objects and Classes
9.1. Managing Instance Data
Problem Solution Discussion See Also
9.2. Managing Class Data
Problem Solution Discussion See Also
9.3. Checking Class or Module Membership
Problem Solution Discussion See Also
9.4. Writing an Inherited Class
Problem Solution Discussion See Also
9.5. Overloading Methods
Problem Solution Discussion See Also
9.6. Validating and Modifying Attribute Values
Problem Solution Discussion See Also
9.7. Defining a Virtual Attribute
Problem Solution Discussion See Also
9.8. Delegating Method Calls to Another Object
Problem Solution Discussion See Also
9.9. Converting and Coercing Objects to Different Types
Problem Solution Discussion
Number conversion and coercion Other conversion methods
See Also
9.10. Getting a Human-Readable Printout of Any Object
Problem Solution Discussion
9.11. Accepting or Passing a Variable Number of Arguments
Problem Solution Discussion
9.12. Using Keyword Arguments
Problem Solution Discussion See Also
9.13. Calling a Superclass’s Method
Problem Solution Discussion
9.14. Creating an Abstract Method
Problem Solution Discussion
9.15. Freezing an Object to Prevent Changes
Problem Solution Discussion See Also
9.16. Making a Copy of an Object
Problem Solution Discussion See Also
9.17. Declaring Constants
Problem Solution Discussion See Also
9.18. Implementing Class and Singleton Methods
Problem Solution Discussion
9.19. Controlling Access by Making Methods Private
Problem Solution Discussion See Also
10. Modules and Namespaces
10.1. Simulating Multiple Inheritance with Mixins
Problem Solution Discussion See Also
10.2. Extending Specific Objects with Modules
Problem Solution Discussion See Also
10.3. Mixing in Class Methods
Problem Solution Discussion See Also
10.4. Implementing Enumerable: Write One Method, Get 48 Free
Problem Solution Discussion See Also
10.5. Avoiding Naming Collisions with Namespaces
Problem Solution Discussion See Also
10.6. Automatically Loading Libraries as Needed
Problem Solution Discussion
10.7. Including Namespaces
Problem Solution Discussion See Also
10.8. Initializing Instance Variables Defined by a Module
Problem Solution Discussion See Also
10.9. Automatically Initializing Mixed-in Modules
Problem Solution Discussion See Also
10.10. Prepending Modules
Problem Solution Discussion
11. Reflection and Metaprogramming
11.1. Finding an Object’s Class and Superclass
Problem Solution Discussion See Also
11.2. Listing an Object’s Methods
Problem Solution Discussion See Also
11.3. Listing Methods Unique to an Object
Problem Solution Discussion See Also
11.4. Getting a Reference to a Method
Problem Solution Discussion See Also
11.5. Fixing Bugs in Someone Else’s Class
Problem Solutions Discussion See Also
11.6. Listening for Changes to a Class
Problem Solution Discussion See Also
11.7. Checking Whether an Object Has Necessary Attributes
Problem Solution Discussion See Also
11.8. Responding to Calls to Undefined Methods
Problem Solution Discussion See Also
11.9. Automatically Initializing Instance Variables
Problem Solution Discussion
11.10. Avoiding Boilerplate Code with Metaprogramming
Problem Solution Discussion See Also
11.11. Metaprogramming with String Evaluations
Problem Solution Discussion
11.12. Evaluating Code in an Earlier Context
Problem Solution Discussion See Also
11.13. Undefining a Method
Problem Solution Discussion See Also
11.14. Aliasing Methods
Problem Solution Discussion See Also
11.15. Doing Aspect-Oriented Programming
Problem Solution Discussion See Also
11.16. Enforcing Software Contracts
Problem Solution Discussion See Also
12. XML and HTML
12.1. Checking That XML Is Well Formed
Problem Solution Discussion See Also
12.2. Extracting Data from a Document’s Tree Structure
Problem Solution Discussion See Also
12.3. Extracting Data While Parsing a Document
Problem Solution Discussion See Also
12.4. Navigating a Document with XPath
Problem Solution Discussion See Also
12.5. Converting an XML Document into a Hash
Problem Solution Discussion See Also
12.6. Validating an XML Document
Problem Solution Discussion See Also
12.7. Substituting XML Entities
Problem Solution Discussion See Also
12.8. Creating and Modifying XML Documents
Problem Solution Discussion See Also
12.9. Compressing Whitespace in an XML Document
Problem Solution Discussion See Also
12.10. Guessing a Document’s Encoding
Problem Solution Discussion See Also
12.11. Converting from One Encoding to Another
Problem Solution Discussion See Also
12.12. Extracting All the URLs from an HTML Document
Problem Solution Discussion See Also
12.13. Transforming Plain Text to HTML
Problem Solution Discussion See Also
12.14. Converting HTML Documents from the Web into Text
Problem Solution Discussion See Also
12.15. Creating a Simple Feed Aggregator
Problem Solution See Also
13. Graphics and Other File Formats
13.1. Thumbnailing Images
Problem Solution Discussion See Also
13.2. Adding Text to an Image
Problem Solution Discussion See Also
13.3. Converting One Image Format to Another
Problem Solution Discussion See Also
13.4. Graphing Data
Problem Solution Discussion See Also
13.5. Adding Graphical Context with Sparklines
Problem Solution Discussion See Also
13.6. Symmetrically Encrypting Data
Problem Solution Discussion See Also
13.7. Parsing Comma-Separated Data
Problem Solution Discussion See Also
13.8. Parsing Not-Quite-Comma-Separated Data
Problem Solution Discussion See Also
13.9. Generating and Parsing Excel Spreadsheets
Problem Solution Discussion See Also
13.10. Compressing and Archiving Files with Gzip and Tar
Problem Solution Discussion
Tar files
See Also
13.11. Reading and Writing ZIP Files
Problem Solution Discussion See Also
13.12. Reading and Writing Configuration Files
Problem Solution Discussion See Also
13.13. Generating PDF Files
Problem Solution Discussion See Also
13.14. Representing Data as MIDI Music
Problem Solution Discussion See Also
14. Databases and Persistence
14.1. Serializing Data with YAML
Problem Solution Discussion See Also
14.2. Serializing Data with Marshal
Problem Solution Discussion See Also
14.3. Persisting Objects with Madeleine
Problem Solution Discussion See Also
14.4. Indexing Unstructured Text with SimpleSearch
Problem Solution Discussion See Also
14.5. Indexing Structured Text with Ferret
Problem Discussion Discussion See Also
14.6. Using Berkeley DB Databases
Problem Solution Discussion See Also
14.7. Controlling MySQL on Unix
Problem Solution Discussion See Also
14.8. Finding the Number of Rows Returned by a Query
Problem Solution Discussion See Also
14.9. Talking Directly to a MySQL Database
Problem Solution Discussion See Also
14.10. Talking Directly to a PostgreSQL Database
Problem Solution Discussion See Also
14.11. Using Object Relational Mapping with ActiveRecord
Problem Solution Discussion See Also
14.12. Building Queries Programmatically
Problem Solution Discussion See Also
14.13. Validating Data with ActiveRecord
Problem Solution Discussion See Also
14.14. Preventing SQL Injection Attacks
Problem Solution Discussion See Also
14.15. Using Transactions in ActiveRecord
Problem Solution Discussion See Also
14.16. Adding Hooks to Table Events
Problem Solution Discussion See Also
14.17. Adding Taggability with a Database Mixin
Problem Solution Discussion See Also
15. Internet Services
15.1. Grabbing the Contents of a Web Page
Problem Solution Discussion See Also
15.2. Making an HTTPS Web Request
Problem Solution Discussion See Also
15.3. Customizing HTTP Request Headers
Problem Solution Discussion See Also
15.4. Performing DNS Queries
Problem Solution Discussion See Also
15.5. Sending Mail
Problem Solution Discussion See Also
15.6. Reading Mail with IMAP
Problem Solution Discussion
Check for new mail Retrieve a UID for a particular message Reading headers made easy Forwarding mail to a cell phone
See Also
15.7. Reading Mail with POP3
Problem Solution Discussion
Forwarding mail to a cell phone
See Also
15.8. Being an FTP Client
Problem Solution Discussion See Also
15.9. Being a Telnet Client
Problem Solution Discussion See Also
15.10. Being an SSH Client
Problem Solution Discussion See Also
15.11. Copying a File to Another Machine
Problem Solution Discussion
15.12. Being a BitTorrent Client
Problem Solution Discussion See Also
15.13. Pinging a Machine
Problem Solution Discussion
15.14. Writing an Internet Server
Problem Solution Discussion See Also
15.15. Parsing URLs
Problem Solution Discussion See Also
15.16. Writing a CGI Script
Problem Solution Discussion See Also
15.17. Setting Cookies and Other HTTP Response Headers
Problem Solution Discussion See Also
15.18. Handling File Uploads via CGI
Problem Solution Discussion See Also
15.19. Running Servlets with WEBrick
Problem Solution Discussion See Also
15.20. Creating a Real-World HTTP Client
Problem Solution Discussion See Also
16. Web Development: Ruby on Rails
16.1. Writing a Simple Rails Application to Show System Status
Problem Solution Discussion See Also
16.2. Passing Data from the Controller to the View
Problem Solution Discussion
16.3. Creating a Layout for Your Header and Footer
Problem Solution Discussion See Also
16.4. Redirecting to a Different Location
Problem Solution Discussion See Also
16.5. Displaying Templates with Render
Problem Solution Discussion See Also
16.6. Integrating a Database with Your Rails Application
Problem Solution Discussion See Also
16.7. Understanding Pluralization Rules
Problem Solution Discussion See Also
16.8. Creating a Login System
Problem Solution Discussion See Also
16.9. Storing Hashed User Passwords in the Database
Problem Solution Discussion See Also
16.10. Escaping HTML and JavaScript for Display
Problem Solution Discussion See Also
16.11. Setting and Retrieving Session Information
Problem Solution Discussion See Also
16.12. Setting and Retrieving Cookies
Problem Solution Discussion See Also
16.13. Extracting Code into Helper Functions
Problem Solution Discussion See Also
16.14. Refactoring the View into Partial Snippets of Views
Problem Solution Discussion See Also
16.15. Adding Dynamic Effects with script.aculo.us
Problem Solution Discussion See Also
16.16. Generating Forms for Manipulating Model Objects
Problem Solution Discussion See Also
16.17. Creating an Ajax Form
Problem Solution Discussion
16.18. Exposing Web Services on Your Website
Problem Solution Discussion See Also
16.19. Sending Mail with Rails
Problem Solution Discussion See Also
16.20. Automatically Sending Error Messages to Your Email
Problem Solution Discussion See Also
16.21. Documenting Your Website
Problem Solution Discussion See Also
16.22. Unit-Testing Your Website
Problem Solution Discussion See Also
16.23. Using breakpoint in Your Web Application
Problem Solution Discussion See Also
17. Web Development: Sinatra
17.1. Developing a Minimalistic Web-Services–Based Application
Problem Solution Discussion See Also
17.2. Writing a Simple Sinatra Application to Show System Status
Problem Solution Discussion See Also
17.3. Creating a Layout for Your Header and Footer
Problem Solution Discussion See Also
17.4. Passing Data from the Controller to the View
Problem Solution Discussion See Also
17.5. Redirecting to a Different Location
Problem Solution Discussion See Also
17.6. Integrating a Database with Your Sinatra Application
Problem Solution Discussion See Also
17.7. Setting Status Codes and Headers
Problem Solution Discussion See Also
17.8. Setting and Retrieving Session Information
Problem Solution Discussion See Also
17.9. Setting and Retrieving Cookies
Problem Solution Discussion See Also
17.10. Sending Mail with Sinatra
Problem Solution Discussion See Also
17.11. Building RESTful Web Services on Your Website
Problem Solution Discussion See Also
17.12. Creating RESTful JavaScript Clients for Your Web Services
Problem Solution Discussion See Also
18. Web Services and Distributed Programming
18.1. Searching for Books on Amazon
Problem Solution Discussion See Also
18.2. Finding Photos on Flickr
Problem Solution Discussion See Also
18.3. Writing an XML-RPC Client
Problem Solution Discussion See Also
18.4. Writing a SOAP Client
Problem Solution Discussion See Also
18.5. Writing a SOAP Server
Problem Solution Discussion See Also
18.6. Charging a Credit Card
Problem Solution Discussion See Also
18.7. Finding the Cost to Ship Packages via UPS or FedEx
Problem Solution Discussion See Also
18.8. Sharing a Hash Between Any Number of Computers
Problem Solution Discussion See Also
18.9. Implementing a Distributed Queue
Problem Solution Discussion See Also
18.10. Creating a Shared “Whiteboard”
Problem Solution Discussion
18.11. Securing DRb Services with Access Control Lists
Problem Solution Discussion See Also
18.12. Automatically Discovering DRb Services with Rinda
Problem Solution Discussion See Also
18.13. Proxying Objects That Can’t Be Distributed
Problem Solution Discussion See Also
18.14. Storing Data on Distributed RAM with MemCached
Problem Solution Discussion See Also
18.15. Caching Expensive Results with MemCached
Problem Solution Discussion See Also
18.16. A Remote-Controlled Jukebox
See Also
19. Testing, Debugging, Optimizing, and Documenting
19.1. Running Code Only in Debug Mode
Problem Solution Discussion See Also
19.2. Raising an Exception
Problem Solution Discussion See Also
19.3. Handling an Exception
Problem Solution Discussion See Also
19.4. Retrying After an Exception
Problem Solution Discussion See Also
19.5. Adding Logging to Your Application
Problem Solution Discussion See Also
19.6. Creating and Understanding Tracebacks
Problem Solution Discussion See Also
19.7. Writing Unit Tests
Problem Solution Discussion See Also
19.8. Running Unit Tests
Problem Solution Discussion See Also
19.9. Testing Code That Uses External Resources
Problem Solution Discussion See Also
19.10. Using debug to Inspect and Change the State of Your Application
Problem Solution Discussion See Also
19.11. Documenting Your Application
Problem Solution Discussion
Other ways of creating RDoc
See Also
19.12. Profiling Your Application
Problem Solution Discussion See Also
19.13. Benchmarking Competing Solutions
Problem Solution Discussion See Also
19.14. Running Multiple Analysis Tools at Once
Problem Solution Discussion
20. Packaging and Distributing Software
20.1. Finding Libraries by Querying Gem Respositories
Problem Solution Discussion See Also
20.2. Installing and Using a Gem
Problem Solution Discussion See Also
20.3. Requiring a Specific Version of a Gem
Problem Solution Discussion See Also
20.4. Uninstalling a Gem
Problem Solution Discussion
20.5. Reading Documentation for Installed Gems
Problem Solution Discussion See Also
20.6. Packaging Your Code as a Gem
Problem Solution Discussion See Also
20.7. Distributing Your Gems
Problem Solution Discussion See Also
20.8. Installing and Creating Standalone Packages with setup.rb
Problem Solution Discussion See Also
21. Automating Tasks with Rake
21.1. Automatically Running Unit Tests
Problem Solution Discussion
Test suites
See Also
21.2. Automatically Generating Documentation
Problem Solution Discussion
Available attributes
See Also
21.3. Cleaning Up Generated Files
Problem Solution Discussion See Also
21.4. Automatically Building a Gem
Problem Solution Discussion See Also
21.5. Gathering Statistics About Your Code
Problem Solution Discussion See Also
21.6. Publishing Your Documentation
Problem Solution Discussion See Also
21.7. Running Multiple Tasks in Parallel
Problem Solution Discussion See Also
21.8. Creating a Generic Project Rakefile
Problem Solution See Also
22. Multitasking and Multithreading
22.1. Running a Daemon Process on Unix
Problem Solution Discussion See Also
22.2. Creating a Windows Service
Problem Solution Discussion See Also
22.3. Doing Two Things at Once with Threads
Problem Solution Discussion
22.4. Synchronizing Access to an Object
Problem Solution Discussion See Also
22.5. Terminating a Thread
Problem Solution Discussion
22.6. Running a Code Block on Many Objects Simultaneously
Problem Solution Discussion See Also
22.7. Limiting Multithreading with a Thread Pool
Problem Solution Discussion See Also
22.8. Driving an External Process with popen
Problem Solution Discussion See Also
22.9. Capturing the Output and Error Streams from a Unix Shell Command
Problem Solution Discussion See Also
22.10. Controlling a Process on Another Machine
Problem Solution Discussion See Also
22.11. Avoiding Deadlock
Problem Solution Discussion See Also
23. User Interface
23.1. Resources 23.2. Getting Input One Line at a Time
Problem Solution Discussion See Also
23.3. Getting Input One Character at a Time
Problem Solution Discussion See Also
23.4. Parsing Command-Line Arguments
Problem Solution Discussion See Also
23.5. Testing Whether a Program Is Running Interactively
Problem Solution Discussion
23.6. Setting Up and Tearing Down a Curses Program
Problem Solution Discussion See Also
23.7. Clearing the Screen
Problem Solution Discussion
23.8. Determining Terminal Size
Problem Solution Discussion See Also
23.9. Changing Text Color
Problem Solution Discussion See Also
23.10. Reading a Password
Problem Solution Discussion See Also
23.11. Allowing Input Editing with Readline
Problem Solution Discussion See Also
23.12. Making Your Keyboard Lights Blink
Problem Solution Discussion See Also
23.13. Creating a GUI Application with Tk
Problem Solution Discussion See Also
23.14. Creating a GUI Application with wxRuby
Problem Solution Discussion See Also
23.15. Creating a GUI Application with Ruby/GTK
Problem Solution Discussion See Also
23.16. Using AppleScript to Get User Input
Problem Solution Discussion See Also
24. Extending Ruby with Other Languages
24.1. Writing a C Extension for Ruby
Problem Solution Discussion See Also
24.2. Using a C Library from Ruby
Problem Solution Discussion See Also
24.3. Calling a C Library Through SWIG
Problem Solution Discussion See Also
24.4. Writing Inline C in Your Ruby Code
Problem Solution Discussion See Also
24.5. Using Java Libraries with JRuby
Problem Solution Discussion
Convenience methods
See Also
25. System Administration
25.1. Scripting an External Program
Problem Solution Discussion See Also
25.2. Managing Windows Services
Problem Solution Discussion See Also
25.3. Running Code as Another User
Problem Solution Discussion See Also
25.4. Running Periodic Tasks Without cron or at
Problem Solution Discussion See Also
25.5. Deleting Files That Match a Regular Expression
Problem Solution Discussion See Also
25.6. Renaming Files in Bulk
Problem Solution Discussion See Also
25.7. Finding Duplicate Files
Problem Solution Discussion See Also
25.8. Automating Backups
Problem Solution Discussion See Also
25.9. Normalizing Ownership and Permissions in User Directories
Problem Solution Discussion See Also
25.10. Killing All Processes for a Given User
Problem Solution Discussion See Also
25.11. Using Puppet for DevOps System Administration
Problem Solution Discussion See Also
Index
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