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attributes.map { |key, value| "#{$1}.#{value}" if key =~ /^svc_(\w{2})_id$/ }.compact

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File.open 'binary.bin', 'wb' do |file|
  b = BinData
  head = b::String, 'Binary file start-point', b::Uint32be, 0, b::Bit16,0, b::Uint24be, @fragments.size
...

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def hash_from_string string, value
  if key = string[/^([^.]+)/]
    {key => hash_from_string(string.gsub(/^[^.]+\.?/, ''), value)}
...

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class String
  def squish
    self.gsub(/^.{#{self[/^\s+/].length}}/, '')
...

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require 'date'
puts((Date.today..Date.today>>12).inject([]) do |m, d|
  d.day == 1 ? m.push(nil, d.strftime('%b'), nil) : (m << nil if d.wday == 1)
...

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puts (1..100).map { |n| [:fizzbuzz][n%15] || [:fizz][n%3] || [:buzz][n%5] || n }

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puts (1..100).map { |n| ['fizzbuzz'][n%3+n%5] || ['fizz'][n%3] || ['buzz'][n%5] || n }

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def fizzbuzz max
  (1..max).map do |n|
    s = ['fizz'][n%3].to_s + ['buzz'][n%5].to_s
...

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def increment_clicks!(hash_string)
  self.increment :clicks if (hash = self.advertisement_hashes.find_by_hash_string(hash_string)) && hash.destroy           # If you want to destroy the object
  # self.increment :clicks if self.advertisement_hashes.delete self.advertisement_hashes.find_by_hash_string(hash_string) # Otherwise
...

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def determine_layout
  case params[:action]
    when 'index', 'show', 'edit', 'update' then 'application'
...

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#...
case name
           when /female/ then 'Female Dorm'
...

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mapping = {'double' => ['Double Bed', 2], 'twin' => ['Twin Bed', 2], 'single' => ['Single Bed', 1], 'female' => 'Female Dorm', ... }

type, size = mapping.find { |k, v| name.include? k }
...

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stuff.each do |name|
  name = name.downcase
  
...

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tmp = reply.case.users.map(&:email)
tmp.delete(reply.created_by.email)
tmp.join(',')           #ATTENTION DEAD CODE!!! DON'T NEED THAT tmp is NOT changed by this and the result is not used by you. result = tmp.join(',')...
...

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def is_18?
  RUBY_VERSION =~ /1.8/
end
...

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if string.include? '1'
  1
else
...

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def toll_free_dealer_phone phone
  phone.gsub /^(866|877|888)/, '1-\1'
end

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def convert x
  x.keys.collect do |k|
    [convert(x[k])].flatten.collect { |j| "#{k}#{".#{j}" if j}" }
...

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#OLD: @myvocabulary.vocabulary.lesson.proficiency.id
@myvocabulary.lession_proficiency #New: Introduce a method that delegates internally to the proficiency of the lesson

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class Array
  def intersperse object
    zip(Array.new(length, object)).flatten[0...-1]
...

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class Array
  def intersperse(object)
    collect { |element| [ element, object ] }.flatten[0...-1]
...

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def current_snapshot
  instances.find { |instance| instance.id == self.current }
end