From: "ara.t.howard" <ara.t.howard@...>
Date: 2007-11-15T12:27:53+09:00
Subject: Re: adding an attribute to an object


On Nov 14, 2007, at 7:10 PM, Mark Volkmann wrote:

> I know how to add new methods to an existing object, but is there a  
> way to add an attribute?
> I know I can do it if the object was created with ObjectStruct, but  
> what if it is a "normal" Ruby object?
>
> R. Mark Volkmann
> Object Computing, Inc.
>

cfp:~ > cat a.rb
require 'attributes' ### gem install attributes

o = Object.new

o.instance_eval{ attribute 'foobar' => 42 }

p o.foobar #=> 42

o.foobar = 'forty-two'

p o.foobar #=> "forty-two"

p o.foobar? #=> "forty-two" (true)

o.foobar 42.0

p o.foobar #=> 42.0


cfp:~ > ruby a.rb
42
"forty-two"
"forty-two"
42.0


a @ http://codeforpeople.com/
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