Method compare

graphlearn/src/common/string/lite_string.h:121–131

< 0 if "*this" < "b", == 0 if "*this" == "b", > 0 if "*this" > "b"

  //   == 0 if "*this" == "b",
  //   >  0 if "*this" >  "b"
  int32_t compare(LiteString b) const {
    const size_t min_len = (size_ < b.size_) ? size_ : b.size_;
    int r = memcmp(data_, b.data_, min_len);
    if (r == 0) {
      if (size_ < b.size_)
        r = -1;
      else if (size_ > b.size_)
        r = +1;
    }
    return r;
  }

  bool contains(LiteString s) const;
  LiteString substr(size_t pos, size_t n = npos) const;