From: Joel VanderWerf <vjoel@...>
Date: 2005-08-03T05:17:59+09:00
Subject: Re: enum collection of constant values

Ara.T.Howard wrote:
>   class Object
>     def enum(*list)
>       mc = Module === self ? self : self.class
>       list.flatten.each_with_index{|e, i| mc.const_set e.to_s.intern, i}
>     end
>     def bit_enum(*list)
>       mc = Module === self ? self : self.class
>       list.flatten.each_with_index{|e, i| mc.const_set e.to_s.intern,  2
> ** i}
>     end
>   end

Why would you want the mc = self.class option ?

irb(main):022:0> x=[]
=> []
irb(main):023:0> x.instance_eval { enum %w{ZZZ AAA} }
=> ["ZZZ", "AAA"]
irb(main):024:0> ZZZ
NameError: uninitialized constant ZZZ
        from (irb):24
irb(main):025:0> Array::ZZZ
=> 0

-- 
      vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407