don't read too much into this...

gistfile1.rb

module Procable
  def to_proc
    klazz = self
    Proc.new { |*args| klazz.new(*args).run }
  end
end

class MyIterator
  extend Procable
  
  def initialize(current_element, index_of_element)
    @current_element = current_element
    @index_of_element = index_of_element
  end
  
  def run
    puts "current_element: #{@current_element}"
    puts "index_of_element: #{@index_of_element}"
  end
end

[1,2,3].each_with_index(&MyIterator)