public void testCartesianProduct_zeroary() {
    assertThat(Sets.cartesianProduct()).containsExactly(list());
  }

  /** A unary cartesian product is one list of size 1 for each element in the input set. */
  public void testCartesianProduct_unary() {
    assertThat(Sets.cartesianProduct(set(1, 2))).containsExactly(list(1), list(2));
  }

  public void testCartesianProduct_binary0x0() {

eyes, and feebly stretching out one paw, trying to touch her.
`Poor little thing!' said Alice, in a coaxing tone, and she tried
hard to whistle to it; but she was terribly frightened all the
time at the thought that it might be hungry, in which case it
would be very likely to eat her up in spite of all her coaxing.

  Hardly knowing what she did, she picked up a little bit of
stick, and held it out to the puppy; whereupon the puppy jumped

final class Platform {
  static CharMatcher precomputeCharMatcher(CharMatcher matcher) {
    // CharMatcher.precomputed() produces CharMatchers that are maybe a little
    // faster (and that's debatable), but definitely more memory-hungry. We're
    // choosing to turn .precomputed() into a no-op in GWT, because it doesn't
    // seem to be a worthwhile tradeoff in a browser.
    return matcher;
  }

  static String formatCompact4Digits(double value) {

  public void testCartesianProduct_zeroary() {
    assertThat(Sets.cartesianProduct()).containsExactly(list());
  }

  /** A unary cartesian product is one list of size 1 for each element in the input set. */
  public void testCartesianProduct_unary() {
    assertThat(Sets.cartesianProduct(set(1, 2))).containsExactly(list(1), list(2));
  }

  public void testCartesianProduct_binary0x0() {

eyes, and feebly stretching out one paw, trying to touch her.
`Poor little thing!' said Alice, in a coaxing tone, and she tried
hard to whistle to it; but she was terribly frightened all the
time at the thought that it might be hungry, in which case it
would be very likely to eat her up in spite of all her coaxing.

  Hardly knowing what she did, she picked up a little bit of
stick, and held it out to the puppy; whereupon the puppy jumped