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#You can just use a set difference (aka minus) to see if one array includes all elements of another

  not_included = [1,2,3] - (1..9).to_a
  not_included      # => []

  not_included = [1,2,3,'A'] - (1..9).to_a
  not_included      # => ["A"]

#Use intersection to test if any of the one are in the other:

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# http://innig.net/software/ruby/closures-in-ruby.rb
# CLOSURES IN RUBY     Paul Cantrell    http://innig.net
# Email: username "cantrell", domain name "pobox.com"

# I recommend executing this file, then reading it alongside its output.
#
# Alteratively, you can give yourself a sort of Ruby test by deleting all the comments,
# then trying to guess the output of the code!

# A closure is a block of code which meets three criteria:

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ENV["RAILS_ENV"] ||= "cucumber"
require File.expand_path(File.dirname(__FILE__) + '/../../config/environment')

require 'cucumber/formatter/unicode'
require 'cucumber/rails/rspec'
require 'cucumber/rails/world'
require 'cucumber/rails/active_record'
require 'cucumber/web/tableish'

require 'webrat'

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--colour
--format specdoc
--loadby mtime
--reverse

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autospec-all: --require features --require lib --format progress features
autospec: --require features --require lib features  
default: --format pretty
html: --format html --out features.html

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# From http://github.com/jaymcgavren
#
# Save this as rcov.rake in lib/tasks and use rcov:all =>
# to get accurate spec/feature coverage data
#
# Use rcov:rspec or rcov:cucumber
# to get non-aggregated coverage reports for rspec or cucumber separately

require 'cucumber/rake/task'
require 'spec/rake/spectask'

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~/.irbrc

if rails_env = ENV['RAILS_ENV']
  # Called after the irb session is initialized and Rails has
  # been loaded (props: Mike Clark).
  IRB.conf[:IRB_RC] = Proc.new do
    ActiveRecord::Base.logger = Logger.new(STDOUT)
    ActiveRecord::Base.instance_eval { alias :[] :find }
  end
end