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#!/usr/bin/env ruby -w
#
# Copyright (c) 2008 Rob Biedenharn
#   Rob [at] AgileConsultingLLC.com
#   Rob_Biedenharn [at] alum.mit.edu
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

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# image_size.rb
#
# Copyright (c) 2007 Rob Biedenharn
#   Rob [at] AgileConsultingLLC.com
#   Rob_Biedenharn [at] alum.mit.edu
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

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# COMMUNITY CHALLENGE
#
# How would you test this Quiz#problem method? Only two rules:
#
# 1. The tests should fail if any part of the application breaks.
#    For example: If "gets" is moved before "puts" then the tests should
#    fail since that breaks the application.
#
# 2. You cannot change the Quiz class. But you can use whatever framework
#    and tools you want for the tests. (RSpec, Cucumber, etc.)

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cons   () { if [ -e Gemfile ]; then
                be='bundle exec'
            else
                be=""
            fi
            if [ -x "script/console" ]; then
                ${be} ruby script/console ${1:-${RAILS_ENV:-development}}
            else
                ${be} rails console ${1:-${RAILS_ENV:-development}}
            fi

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require 'set'

def distinct_sets(setlist)
  Set.new( setlist.map{|s|Set.new(s)} ).
    divide {|a,b| ! (a&b).empty? }.to_a.
    map{|e|e.to_a.inject{|b,l|b|l}.to_a.sort{|a,b| if Numeric === a && Numeric === b
                                                     a <=> b
                                                   else
                                                     a.to_s <=> b.to_s
                                                   end }}

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def mask(x)y=x.dup;y[6...-4]=y[6...-4].gsub(/./,'*');y end

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rab

run with:

ruby simulating_vehicles.rb

or to see each vehicle:

ruby -v simulating_vehicles.rb

You'll have to tally the results yourself across many runs, but this is way more than you deserve. (And you really need to understand it before you turn it in.)

rab

class Person
  include ActiveModel::MassAssignmentSecurity

  attr_accessor :name, :birthday, :handsomeness
  attr_protected :handsomeness

  def initialize(params = {})
    self.attributes = params
  end

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#
# bash completion support for core Git.
#
# Copyright (C) 2006,2007 Shawn O. Pearce <spearce@spearce.org>
# Conceptually based on gitcompletion (http://gitweb.hawaga.org.uk/).
# Distributed under the GNU General Public License, version 2.0.
#
# The contained completion routines provide support for completing:
#
#    *) local and remote branch names