From: "Hal E. Fulton" <hal9000@...>
Date: 2003-03-25T14:25:53+09:00
Subject: Re: Iterate over two lists in parallel

----- Original Message ----- 
From: "Jim Weirich" <jweirich@one.net>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Monday, March 24, 2003 7:50 PM
Subject: Re: Iterate over two lists in parallel


> Here's my take on this ... you can find an HTML version (that's a bit
> more readable) at http://w3.one.net/~jweirich/talks/same_fringe/

Jim, 

I've been playing with this for about an hour, 
and I've only managed to convince myself that
I don't actually understand it.

What I tried to do was encapsulate this 
functionality in a module called Gen, so
that I could, for instance, do this:

  class Array
    include Gen
  end

  x = [5, 6, 7, 8, 9]

  loop do
    a = x.get
    break if x.nil?
    p a
  end

Yes, I know the loop is trivial and an internal
iterator would suffice here. The point is that
I can't figure out this simple task. :(

Can you illuminate?

Thanks,
Hal