C# [플래그] 열거형에서 비트 연산을 수행하는 방법은 무엇입니까?

<code class="language-csharp">flags = flags | FlagsEnum.Bit4; // 设置位 4</code>

<code class="language-csharp">bool isBit4Set = (flags & FlagsEnum.Bit4) != 0;</code>

<code class="language-csharp">flags = flags ^ FlagsEnum.Bit4; // 切换位 4</code>

<code class="language-csharp">flags = flags & ~FlagsEnum.Bit4; // 清除位 4</code>

<code class="language-csharp">public static bool Has<T>(this System.Enum type, T value) {
    return (((int)(object)type & (int)(object)value) == (int)(object)value);
}

public static bool Is<T>(this System.Enum type, T value) {
    return (int)(object)type == (int)(object)value;
}

public static T Add<T>(this System.Enum type, T value) {
    return (T)(object)(((int)(object)type | (int)(object)value));
}

public static T Remove<T>(this System.Enum type, T value) {
    return (T)(object)(((int)(object)type & ~(int)(object)value));
}</code>

<code class="language-csharp">SomeType value = SomeType.Grapes;
bool isGrapes = value.Is(SomeType.Grapes); // true
bool hasGrapes = value.Has(SomeType.Grapes); // true

value = value.Add(SomeType.Oranges);
value = value.Add(SomeType.Apples);
value = value.Remove(SomeType.Grapes);

bool hasOranges = value.Has(SomeType.Oranges); // true
bool isApples = value.Is(SomeType.Apples); // false
bool hasGrapes = value.Has(SomeType.Grapes); // false</code>