From: Devin Mullins <twifkak@...>
Date: 2006-11-27T01:31:48+09:00
Subject: Re: how do I contribute to Ruby?

Giles Bowkett wrote:
> You know, this would make a pretty entertaining Ruby Quiz. Especially
> if you also had to make sure that is_a? User and is_an? Udder had to
> work properly as well.

require 'rubygems'
require 'linguistics'
Linguistics.use :en, :installProxy => true
module Kernel
   %w{a an}.each do |art|
     define_method("is_#{art}?") do |mod|
       raise NameError unless art == mod.name.a.split[0]
       kind_of? mod
     end
   end
end
5.is_a? Object #=> NameError
5.is_an? Object #=> true
5.is_an? String #=> NameError
5.is_a? String #=> false

(Testing user/udder is left as an exercise to the reader.)

Devin