From: "trans.  (T. Onoma)" <transami@...>
Date: 2004-12-14T00:12:50+09:00
Subject: Help writing a each_unique method

I have this method:

  def each_unique_pair
    self.each_with_index{ |a,i|
      self[(i+1)..-1].each{ |b| yield a,b }
    }
  end

I'm trying to write a generalized version but having a bit of time about it:

  def each_unique(n=2)
    # how?
  end

My (imperfect) solutions keep leading me to recursion but I'd rather avoid it 
(as I think it would be less efficient, correct me if I'm wrong)

Thanks,
T.

P.S. Does anyone have a really good String#word_wrap method? I wrote one but 
it isn't so good b/c it strip newlines.