From: Jeff Nyman <jeffnyman_noemail@..._gmail.com>
Date: 2006-10-04T03:20:16+09:00
Subject: Re: Using Each to Iterate

"Mariano Kamp" <mariano.kamp@acm.org> wrote in message
news:F4F2C675-A916-469A-A4D8-228930FB2BDB@acm.org...

>    I have the feeling that you didn't figure it out completely yet.

You are correct, as it turns out. :)

I did need the find_all. What's interesting is I find that I can do the
following:

(1) Have my selection method in the StepList class look like this:

def selection
  @guides.find_all { |guide| guide }
end

(2) Have my 'each' method in the Step class look like this:

def each
end

(3) Cycle through the elements like this:

$stepList.selection.each { |thisStep|
  puts thisStep
}

If I run that above code (from (3)), I get this:

Step Guide: 202G_OrdAdd, 203G_OrdUpdate, first after
202G_OrdAdd|203G_OrdUpdateFirst
Step Guide: 202G_OrdAdd, 203G_OrdUpdate, last|203G_OrdUpdateLast
Step Guide: 203G_OrdUpdate, 203G_OrdUpdate, last|203G_OrdUpdateLast

Here the last part (after the second comma) is actually the filter part I
want. With this, however, I can at least parse the string and get to that.

I should note that to get the above output, it was necessary to have a to_s
method in the Step class. Otherwise, I would get this when the
'selection.each' was run:

#<Step:0x2a9b15c>
#<Step:0x2a9a338>
#<Step:0x2a995dc>

I think what was (perhaps still is) throwing me off is that I have an object
(Step) being stored within another object (StepList).

- Jeff