Ruby Sorting Example

ruby-sorting-example.rb

class SizeMatters
  include Comparable
  attr :str
  def <=>(anOther)
    str.size <=> anOther.str.size
  end
  def initialize(str)
    @str = str
  end
  def inspect
    @str
  end
end

[
  SizeMatters.new("S"),
  SizeMatters.new("SSSS"),
  SizeMatters.new("SSSSS"),
  SizeMatters.new("SS"),
  SizeMatters.new("SSS")
].sort