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key = [:fact_id, :image_id, :video_id, :community_idea_id, :stock_ad_id].detect {|k| params.has_key?(k)}

if key
...

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require 'ostruct'

class Page < OpenStruct
...

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def has_only_widgets_or_doohickeys?
  @item.widgets.blank? || @item.doohickeys.blank?
end
...

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@subscriptions = [:free, :lite, :brisk, :jammin].inject({}) do |result, ele|
  result[ele] = SubscriptionType.make(ele)
  result
...

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  def self.merge_sum_new(*hashes)
    returning(Hash.new {|h,k| h[k] = 0}) do |new_hash|
      hashes.each do |hash|
...

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pp 'The green hat is the twin of the green hat'.downcase.split.to_freq_hash

# from http://github.com/danielharan/support/blob/14178d993a566d8d2e583c24591f4e381e49d327/lib/support/array_ext.rb
...

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				URL url = new URL("https://dev.psigate.com:7989/Messenger/XMLMessenger");
				HttpURLConnection connection = (HttpURLConnection)url.openConnection();
				connection.setDoInput(true);		
...

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def haar_1d(a)
  r = []
  (Math.log(a.length) / Math.log(2) - 1).to_i.downto(0) { |j|
...

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class SomeObjectWithComponent
  def component_value=(value)
    send("#{component}=", value)
...

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open("output.txt", 'a') do |file|
  1000.times do
    file.puts create_word('cvcvv') + '.com'
...

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def image_path(type)
  img_url = "http://s3.carfinancechief.com.au"
  photo = find_photo("F")
...

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a = [['a', '1'], ['b', '2', '3']]
p Hash[*a.flatten]
ArgumentError: odd number of arguments for Hash
...

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[['a', '1'], ['b', '2']].inject({}) {|hash,i| k,v = i; hash[k] = v; hash}

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def setup_search
    @timetable = Timetable.find( :first,
      :conditions => [ 'day = ? AND status = "active"', params[:id] ]
...

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def search
  Course.paged_search nil, nil, nil, params[:page]
  # ... add breadcrumb and course_categories
...

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class ReportReader
  def initialize(file_name)
    @lines = File.open(file_name).read.split("\n")
...

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biggest_square = [1,4,3,5].inject(0){ |memo, i| [memo, square(i)].max }