From: "Kumar R." <lists@...>
Date: 2013-03-06T03:16:12+09:00
Subject: Re: Confusion with Ruby's "case/when" block statement

Robert Klemme wrote in post #1100204:
> On Mon, Mar 4, 2013 at 6:41 PM, Kumar R. <lists@ruby-forum.com> wrote:
>> Module#===) operator, which tests if the right-hand side is_a? left-hand
>> side. The syntax is simple and elegant.
>
> Now, what do you want to know?  Or is everything clear now?
>
> Cheers
>
> robert

@Robert - that `is_a?` test actually made me confused. as `when` test 
for subclass or instance of or any thing valid . But how `is_a` doing 
help to the `while` clause that is my confusion.

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