NAME

  attributes.rb

URIS

  http://rubyforge.org/projects/codeforpeople/
  http://codeforpeople.com/lib/ruby

SYNOPSIS

  attributes.rb provides a set of attr_* like method with several user
  friendly additions.  attributes.rb is similar to the traits.rb package but
  sacrifices a few features for simplicity of implementation: attributes.rb is
  only 42 lines of code.

  the implimentation of attributes.rb borrows many of the best ideas from the
  metakoans.rb ruby quiz

    http://www.rubyquiz.com/quiz67.html

  in particular the solutions of Christian Neukirchen and Florian Gross.

SAMPLES

  <========< samples/a.rb >========>

  ~ > cat samples/a.rb

    #
    # basic usage is like attr, but note that attribute defines three methods,
    # getter, setter, and query
    #
      require 'attributes'
    
      class C
        attribute 'a'
      end
    
      c = C.new
    
      c.a = 42              # setter
      p c.a                 # getter
      p 'forty-two' if c.a? # query
    
    #
    # also not that attribute(s) works as well for objects as classes
    #
      o = Object.new
      o.attribute 'answer' => 42
      p o.answer

  ~ > ruby samples/a.rb

    42
    "forty-two"
    42


  <========< samples/b.rb >========>

  ~ > cat samples/b.rb

    #
    # default values may be given either directly or as a block which