module Tins::AskAndSend

def ask_and_send(method_name, *args, &block)
  if respond_to?(method_name)
    __send__(method_name, *args, &block)
  end
end

def ask_and_send!(method_name, *args, &block)
  if respond_to?(method_name, true)
    __send__(method_name, *args, &block)
  end
end