From: Cary Swoveland <cary@...>
Date: 2010-01-20T07:42:42+09:00
Subject: Re: Newbie needs help getting started

Marnen Laibow-Koser wrote:

...
>> I expected
>>    n = 0
>> but instead, Ruby says
>>    n = #<Node:0x100156480>
>> ?
> 
> Why would you expect n to be 0 when you're assigning the actual Node 
> object to n?

It would have helped if I didn't mis-write my little example.  What I 
meant to write was:

class Node
  attr_reader :row
  def initialize(r)
    row = r
  end
end

n = Node.new(0)
puts "n.row = #{n.row}"

After reading the other replies, I see my error was in line 4: rather 
than
    row = r
I needed
    @row =r

I get it, though I don't know why
  attr_reader :row
is not be written
  attr_reader :@row
but I do note that the latter produces an error.

Thanks, all.

Cary



-- 
Posted via http://www.ruby-forum.com/.