gistfile1.txt

numbers = %w(zero one two three four five six seven eight nine)

operations = {
  'minus' => '-',
  'plus' => '+',
  'times' => '*',
  'divided_by' => '/'
}

(0..9).each do |number|
  define_method numbers[number] do |proc = nil|
    return proc.call(number) if proc
    number
  end
end

operations.each do |key, value|
  define_method key do |number|
    Proc.new { |x| x.send(value, number.to_f) }
  end
end