gistfile1.txt

require 'v8'
require 'delegate'

cxt = V8::Context.new
cxt['puts'] = lambda {|msg| puts(msg)}
a = SimpleDelegator.new([17,1])
def a.each(fn)
  __getobj__.each do |item|
    fn.methodcall(item)
  end
end
cxt['a'] = a
cxt.eval('a.each(function() {puts(this)})')