From: Robert Klemme <shortcutter@...>
Date: 2013-03-06T03:45:47+09:00
Subject: Re: Confusion with Ruby's "case/when" block statement

On Tue, Mar 5, 2013 at 7:16 PM, Kumar R. <lists@ruby-forum.com> wrote:
> 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?

> @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.

Yes, you are confused.  We were talking about "case ... when" and not "while".

Module#is_a? and Module#=== implement the same test.

I suggest you get yourself a Ruby tutorial and work through it start
to end - including all the exercises.

Cheers

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/