gistfile1.txt

#
# Converts an array with nested elements
# into a flattened array with the nested
# elements inline.
#
# == Parameters:
# arr::
#   This parameter can be an array or
#   an single object, or nil. If it
#   is a single object or nil, it will
#   be converted to an array for you.
#
# == Returns:
#    A flattened copy of the array.
#    If nil was passed, [nil] will
#    be returned.
#
def flattenArray(arr)
  rv = []
  
  return rv.push(arr) if arr.class != Array

  arr.each do |subArray|
    flattenedSub = flattenArray(subArray)
    rv.concat(flattenedSub)
  end

  rv
end