From: David Jacobs <developer@...>
Date: 2011-05-12T02:52:02+09:00
Subject: Re: Scope problem (?) in implementing Design Patterns in Ruby

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I think the second link points to the wrong pastie.

I can see a couple of problems with the code, first of which is that you are
setting up Expression.new to require an argument but not passing it an
argument when you call All_basic.new, etc.

More than design patterns (which I think are a little much here), I would
suggest looking into Ruby's higher order functions like reduce and map. They
make your code a lot simpler. This is an alternate implementation I did. Let
me know what you think:

http://www.pastie.org/1889838

On Wed, May 11, 2011 at 1:20 PM, RichardOnRails <
RichardDummyMailbox58407@uscomputergurus.com> wrote:

> Hi,
>
> I'm hoping that employing "Design Patterns in Ruby" will lead to less
> coding errors and more easily maintained code.  I'm stuck with the Not
> pattern in the File Finding pattern in Chapter 15.
>
> I've posted my code and output in http://www.pastie.org/1889586 and
> http://www.pastie.org/188968, respectively.  Any idea about the cause
> of the reported syntax error?
>
> Thanks in Advance,
> Richard
>
>

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