Method rehash

tensorflow/core/lib/gtl/flatmap.h:112–112

  void clear() { rep_.clear(); }
  void reserve(size_t N) { rep_.Resize(std::max(N, size())); }
  void rehash(size_t N) { rep_.Resize(std::max(N, size())); }
  void resize(size_t N) { rep_.Resize(std::max(N, size())); }
  size_t size() const { return rep_.size(); }
  bool empty() const { return size() == 0; }