grid_index.hpp

Go to the documentation of this file.

#pragma once
 
#include <functional>
 
struct GridIndex {
  int x;
  int y;
 
  bool operator==(const GridIndex& other) const { return x == other.x && y == other.y; }
};
 
namespace std {
template <>
struct hash<GridIndex> {
  std::size_t operator()(const GridIndex& k) const noexcept {
    return std::hash<int>()(k.x) ^ (std::hash<int>()(k.y) << 1);
  }
};
}  // namespace std