Although Ruby is an easy language to learn, in the heat of action you may find that you can't remember the correct syntax for a conditional or the name of a method. This handy pocket reference offers brief yet clear explanations of Ruby's core components, from operators to reserved words to data structures to method syntax, highlighting those key features that you'll likely use every day when coding Ruby.
Whether you've come to Ruby because of the Rails web development framework --Ruby's killer app -- or simply because it's a relatively clean, powerful and expressive language that's useful for a lot of applications, the Ruby Pocket Reference is organized to help you find what you need quickly. This book not only will get you up to speed on how Ruby works, it provides you with a handy reference you can use anywhere, anytime.
In this book, you find essential information on:
* Reserved words, operators, comments, numbers, variables, ranges, and symbols
* Predefined variables andglobal constants
* Conditional statements, method use, classes, and modules (mixins)
* Lists of methods from the Object, String, Array, and Hash classes and the Kernel module
* sprintf andtime formatting directories
* Interactive Ruby (irb) and the Ruby debugger
* Ruby documentation
You also get information on the RubyGems package utility and Rake, a build tool similar to make. If you're using Ruby daily and just want the facts-fast-Ruby Pocket Reference is your book.
Sprache
Verlagsort
Illustrationen
Maße
Höhe: 176 mm
Breite: 110 mm
ISBN-13
978-0-596-51481-5 (9780596514815)
Schweitzer Klassifikation
Inhaltsverzeichnis
Running Ruby
Running the Ruby Interpreter
Using a Shebang Line on Unix/Linux
Associating File Types on Windows
Reserved Words
Operators
Comments
Numbers
Variables
Local Variables
Instance Variables
Class Variables
Global Variables
Constants
Parallel Assignment of Variables
Symbols
Predefined Variables
Pseudovariables
Global Constants
Ranges
Methods
Parentheses
Return Values
Method Name Conventions
Default Arguments
Variable Arguments
Aliasing Methods
Blocks
Procs
Conditional Statements
The if Statement
The unless Statement
The while Statement
The until Statement
The case Statement
The for Loop
The Ternary Operator
Executing Code Before or After a Program
Classes
Instance Variables
Accessors
Class Variables
Class Methods
Singletons
Inheritance
Public, Private, or Protected
Modules and Mixins
Files
Creating a New File
Opening an Existing File
ARGV and ARGF
Renaming and Deleting Files
File Inquiries
File Modes and Ownership
The IO Class
Exception Handling
The rescue and ensure Clauses
The raise Method
The catch and throw Methods
Object Class
Object Instance Methods
Kernel Module
String Class
Expression Substitution
General Delimited Strings
Here Documents
Escape Characters
Character Encoding
Regular Expressions
String Methods
Array Class
Creating Arrays
Array Class Methods
Array Instance Methods
Hash Class
Creating Hashes
Hash Class Methods
Hash Instance Methods
Time Formatting Directives
Interactive Ruby (irb)
Ruby Debugger
Ruby Documentation
RDoc Options
RubyGems
Rake
Ruby Resources
Glossary
Index
