c ++中的枚举类-replacement- in c#

Question

看看这些c ++代码:

enum class Flag : int32 {
    f_unread = (1 << 0),
    f_out = (1 << 1),
    f_mentioned = (1 << 4),

    MAX_FIELD = (1 << 4),
};

c#中这些代码的隐蔽是什么？

Answer 1

使用有形.似乎它并没有太大的不同.

[Flags]
public enum Flag : int
{
    f_unread = (1 << 0),
    f_out = (1 << 1),
    f_mentioned = (1 << 4),

    MAX_FIELD = (1 << 4),
}

在c#中,要enum用作标志操作的位字段,应该添加FlagsAttribute,添加[FlagsAttribute]或[Flags]之前添加enum.