ruby

Pointers

• RubyOnRails

ApacheCon2005 - Ruby for Java Developers

• My notes
  • Talk by Neal Ford
  • ThoughtWorks architect
  • http://www.nealford.com/
• What is ruby
  • http://www.ruby-lang.org/
  • interpeted scripting language for quick and easy oo programming
  • very idiomatic - lots of different ways to do things
  • many features to process text files and do sys mgmt tasks

    (like perl)

  • simple syntax
  • exception handling
  • anything can redefined easily - meta programming like smalltalk
  • inspired by Eiffel, Ada, smalltalk, Java, Python, Perl
  • complete, full, pure oo language
    • all data is an object, no primitave types
    • carefully designed to be complete and open for improvement
  • single inheritance language - on purpose
    • mixins - some of the benefits of multiple inheritance without the problems
  • loose syntax - encourages very readable code
    • parens for methods are optional
  • true closures
  • true mark-and-sweep garbage collection
  • no variable declarations
    • var_name - local
    • @var_name - instance variable
    • @@var_name - class variable
    • VAR_NAME - gobal
  • OS independent thrading
  • highly portable
• documentation
  • english reference manual is very outdated (japanese)
  • http://www.ruby-doc.org/ has up-to-date RubyDocs and other resources
  • the pick-axe book
• syntax - see slides
• access control
  • public - default
  • protected - only objects of class or subclass
  • private
    • can be called only in the defining class and by direct descendents within that same object
    • can only be called by an instance of the defining class or subclass

;