module Enumerable

  # mmap - maps a sequence of method calls on member objects
  #
  # Example:
  #
  #   people.mmap(:name, :age) #=> [["Jeffy", 28], ["Soosi", 42]]

  def mmap(*args)
    map { |member| args.map { |meth_id| -> (_) {_.send(meth_id)} }.map { |f| f.call(member) } }
  end
end