example_containers_bitset.cpp

// Licensed under the MIT License <http://opensource.org/licenses/MIT>.
// SPDX-License-Identifier: MIT
// Copyright (c) 2019 - 2024 Daniil Goncharov <neargye@gmail.com>.
// Copyright (c) 2022 - 2023 Bela Schaum <schaumb@gmail.com>.
//
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// of this software and associated  documentation files (the "Software"), to deal
// in the Software  without restriction, including without  limitation the rights
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// furnished to do so, subject to the following conditions:
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#if defined(_MSC_VER)
#  pragma warning(push)
#  pragma warning(disable : 4244) // warning C4244: 'argument': conversion from 'const T' to 'unsigned int', possible loss of data.
#endif

#include <iostream>

#include <magic_enum/magic_enum_containers.hpp>

enum class Color { RED = 1, GREEN = 2, BLUE = 4 };
template <>
struct magic_enum::customize::enum_range<Color> {
  static constexpr bool is_flags = true;
};

int main() {

  auto color_bitset = magic_enum::containers::bitset<Color>();
  color_bitset.set(Color::GREEN);
  color_bitset.set(Color::BLUE);

  std::cout << std::boolalpha;
  std::cout << color_bitset.size() << std::endl; // 3 == magic_enum::enum_count<Color>()
  std::cout << color_bitset.all() << std::endl; // false
  std::cout << color_bitset.any() << std::endl; // true
  std::cout << color_bitset.none() << std::endl; // false
  std::cout << color_bitset.count() << std::endl; // 2
  std::cout << color_bitset.test(Color::RED) << std::endl; // false
  std::cout << color_bitset.test(Color::GREEN) << std::endl; // true
  std::cout << color_bitset.test(Color::BLUE) << std::endl; // true

  return 0;
}