Method isNull

Fleece/Support/diff_match_patch.hh:178–180

    Patch() : start1(0), start2(0), length1(0), length2(0) {}

    bool isNull() const {
      return start1 == 0 && start2 == 0 && length1 == 0 && length2 == 0 && diffs.size() == 0;
    }

    /**
     * Emulate GNU diff's format.