From: ixnay <no@...>
Date: 2006-10-04T01:00:05+09:00
Subject: Using Each to Iterate

Greetings all.

Hopefully I've described this adequately and someone can see what I'm 
missing. I have a feeling it's obvious. I've been using the Song and 
SongList examples from the Pragmatic Programmer's guide, but I'm stuck on 
one thing.

I have a class called StepList and in that class I have an each method as 
such:

class StepList
  def initialize
    @guides = Array.new
  end
  def each
    @guides.find { |guide| guide.filter }
  end
end

If I put a "puts" in front of the guide.filter, I see that this is working 
correctly by just grabbing the values I want. However, the results are never 
passed back. For example, I have this:

$stepList.each { |thisFilter|
  puts "test"
  puts thisFilter
}

What I'm trying to do is get the value of each filter and have that get 
placed in thisFilter each time through the loop. What happens is that 
nothing happens! I do not even see the "test" text get printed out. Yet, it 
seems the each must be looping because the guide.filter in my my each method 
does return values if I put a puts in front of it.

Hopefully I've provided enough information here. Any help would be 
appreciated.

- Jeff