From: "ara.t.howard" <ara.t.howard@...>
Date: 2008-08-27T00:23:19+09:00
Subject: Re: Passing a block with define_method


On Aug 26, 2008, at 9:03 AM, James Coglan wrote:

>> module_eval a string.
>
>
>
> I'm actually wrapping existing methods so I need to use  
> define_method to
> retain access to the old method. Here's my (broken) code so far:
>
> module Continuations
>  def accepts_continuation(*args)
>    args.each do |method_name|
>      func = instance_method(method_name)
>      define_method(method_name) do |*params, &block|
>        value = func.bind(self).call(*params)
>      end
>    end
>  end
> end


off the top of my head (un-tested but similar will work)


module Continuations

   Funcs = {}

   def Continuations.funcs() Funcs end

   def accepts_continuation *argv

     argv.each do |arg|

       arg = arg.to_s

       Funcs[arg] = instance_method(arg)

       module_eval <<-code
         def #{ arg }(*a, &b)
           Contiuations.funcs.bind(self).call(*a, &b
         end
       code
     end
   end
end



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