176   int Compare(const Slice& a, const Slice& b) const override {  in Compare()
179     double db = std::stod(b.ToString());  in Compare()
185       return a.compare(b);  in Compare()
204   int Compare(const Slice& a, const Slice& b) const override {  in Compare()
206     uint32_t hb = Hash(b.data(), b.size(), 66);  in Compare()
208       return a.compare(b);  in Compare()
227   int Compare(const Slice& a, const Slice& b) const override {  in Compare()
229     assert(b.size() >= 2);  in Compare()
231     size_t size_b1 = static_cast<size_t>(b[0]);  in Compare()
233     size_t size_b2 = static_cast<size_t>(b[1]);  in Compare()
235     assert(size_b1 + size_b2 + 2 == b.size());  in Compare()
238     Slice b1 = Slice(b.data() + 2, size_b1);  in Compare()
240     Slice b2 = Slice(b.data() + 2 + size_b1, size_b2);  in Compare()