From: 7stud -- <bbxx789_05ss@...>
Date: 2009-02-11T20:05:42+09:00
Subject: Re: simple class question

Tom Cloyd wrote:
> I can see you were as
> surprised (more or less) as I was by the failure of the "return n"
> statement to do anything. 
>

I'm a ruby beginner too.

> 
> I will study your example. I'm sure it will teach me a few things. 
> Thanks!
>

Here is a little fancier get_data method:

  def get_data
    while data = @file.gets
      yield data.chomp.split
    end

    @file.close
  end

A yield statement will send the specified value to a block that you 
specify to the right of the method call:

dp = MyDataProcessor.new("data.txt")

dp.get_data {|processed_data| p processed_data}

If you need to execute more than one line of code in that block, then 
you would write it like this:

dp.get_data do |processed_data|
  #some code here
  #other code here

  p processed_data
end


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