From: Adam Akhtar <adamtemporary@...>
Date: 2008-02-10T21:38:22+09:00
Subject: Re: Array Practice

....to doing the opposite.

Although there is already a method call to flatten arrays i thought 
since i created an unflatten one above i should have go at flattening.

It takes a nested array and then returns a flattened version



def flattenlist nestedlist
  flatlist = []

  return flatlist if nestedlist.empty?

  if (nestedlist.first.is_a?(Array))
    flatlist.push nestedlist.first.shift
    nestedlist.delete_at(0)  if (nestedlist.first.empty?)
  else #not array so just add
    flatlist.push nestedlist.shift
  end

  flatlist = flatlist + flattenlist(nestedlist)
  flatlist
end

What do you guys/girls think? give me your hints and ill go away and 
improve it!
I wasnt so happy with this part

  if (nestedlist.first.is_a?(Array))
    flatlist.push nestedlist.first.shift
    nestedlist.delete_at(0)  if (nestedlist.first.empty?)


I have a feeling theres a delete method that after deleting the last 
element in an empty array will delete the array itself.


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