From: Peter Hickman <peter@...>
Date: 2001-11-30T23:45:23+09:00
Subject: [ruby-talk:27071] Re: Using Enumerable

Mike Stok wrote:

> Be careful that the use of an instance variable means that you may be
> surprised by the behaviour of code like
>
>   fred = Fred.new
>
>   fred.each { |f1|
>       puts "f1 is #{f1}"
>       fred.each { |f2|
>           puts "f2 is #{f2}"
>       }
>   }
>
> as the two iterators "share" @pointer and don't play well together.

Fortunately for this class I have a very specific use in mind and I can
avoid this headache altogether.