# File lib/facets/core/module/namespace.rb, line 25
  def namespace( name, mod=nil, &blk )

    # If block is given then create a module, otherwise
    # get the name of the module.
    if block_given?
      name = name.to_s
      raise ArgumentError if mod
      mod  = Module.new(&blk)
    else
      if Module === name
        mod = name
        name = mod.basename.downcase
      end
      mod  = mod.dup
    end

    # Include the module. This is neccessary, otherwise
    # Ruby won't let us bind the instance methods.
    include mod

    # Save the instance methods of the module and
    # replace them with a "transparent" version.
    methods = {}
    mod.instance_methods(false).each do |m|
      methods[m.to_sym] = mod.instance_method(m)
      mod.instance_eval do
        define_method(m) do
          super
        end
      end
    end

    # Add a method for the namespace that delegates
    # via the Functor to the saved instance methods.
    define_method(name) do
      Functor.new(methods) do |op, mtab, *args|
        mtab[op].bind(self).call(*args)
      end
    end
  end