The other guests had taken advantage of the Queen's absence,
and were resting in the shade:  however, the moment they saw her,
they hurried back to the game, the Queen merely remarking that a
moment's delay would cost them their lives.

  All the time they were playing the Queen never left off
quarrelling with the other players, and shouting `Off with his
head!' or `Off with her head!'  Those whom she sentenced were

        // The pending load was clobbered by a manual write.
        // Unblock all pending gets, and have them return the new value.
        set(newValue);
      } else {
        // The pending load was removed. Delay notifications until loading completes.
        oldValue = unset();
      }

      // TODO(fry): could also cancel loading if we had a handle on its future
    }

        // The pending load was clobbered by a manual write.
        // Unblock all pending gets, and have them return the new value.
        set(newValue);
      } else {
        // The pending load was removed. Delay notifications until loading completes.
        oldValue = unset();
      }

      // TODO(fry): could also cancel loading if we had a handle on its future
    }

      return comparator;
    }
    return (Comparator<E>) Ordering.natural();
  }

  /**
   * Returns a live {@link Map} view whose keys are the contents of {@code set} and whose values are
   * computed on demand using {@code function}. To get an immutable <i>copy</i> instead, use {@link
   * #toMap(Iterable, Function)}.
   *
   * <p>Specifically, for each {@code k} in the backing set, the returned map has an entry mapping

  The other guests had taken advantage of the Queen's absence,
and were resting in the shade:  however, the moment they saw her,
they hurried back to the game, the Queen merely remarking that a
moment's delay would cost them their lives.

  All the time they were playing the Queen never left off
quarrelling with the other players, and shouting `Off with his
head!' or `Off with her head!'  Those whom she sentenced were