17 class Slice;  variable
48   virtual int Compare(const Slice& a, const Slice& b) const = 0;
55   virtual bool Equal(const Slice& a, const Slice& b) const {  in Equal()
78                                      const Slice& limit) const = 0;
90   virtual bool IsSameLengthImmediateSuccessor(const Slice& /*s*/,  in IsSameLengthImmediateSuccessor()  argument
91                                               const Slice& /*t*/) const {  in IsSameLengthImmediateSuccessor()
103   int CompareWithoutTimestamp(const Slice& a, const Slice& b) const {  in CompareWithoutTimestamp()
114   virtual int CompareTimestamp(const Slice& /*ts1*/,  in CompareTimestamp()  argument
115                                const Slice& /*ts2*/) const {  in CompareTimestamp()
119   virtual int CompareWithoutTimestamp(const Slice& a, bool /*a_has_ts*/,  in CompareWithoutTimestamp()
120                                       const Slice& b, bool /*b_has_ts*/) const {  in CompareWithoutTimestamp()