Bitset

public struct Bitset(int data = 0) : IEquatable<Bitset>
{
  public bool this[int i]
  {
    get
    {
      if (i < 0 or >= 32)
        throw new ArgumentOutOfRangeException();
      int mask = 1 << i;
      return (_data & mask) == mask;
    }
    set
    {
      if (i < 0 or >= 32)
        throw new ArgumentOutOfRangeException();
      int mask = 1 << i;
      value ? _data |= mask : _data &= ~mask;
    }
  }

  public bool Equals(Bitset other) => _data == other._data;
  public override bool Equals(object? o) => o is Bitset other && Equals(other);
  public override int GetHashCode() => _data.GetHashCode();

  public static operator ==(Bitset left, Bitset right) => left.Equals(right);
  public static operator !=(Bitset left, Bitset right) => !left.Equals(right);

  private int _data = data;
}