Simple/naive Elixir macro to check if up to N values in a tuple match for guard clauses

matching_tuple_values.ex

defmodule Macros do
  defmacro matching_tuple_values(n, a, b) do
    # If we've reached n = 0 for the Macro invocation, we've already checked
    # the elements at that index, so we can
    if n < 1, do: true,
    else: quote do: (
      # Check that elem(a, n - 1) == elem(b, n - 1).
      (elem(unquote(a), unquote(n) - 1) == elem(unquote(b), unquote(n) - 1))
      # Then, check that this also holds recursively for
      # matching_tuple_values(n - 1, ...).
      and unquote(__MODULE__).matching_tuple_values(unquote(n - 1), unquote(a), unquote(b))
    )
  end
end