【C#】性别类

实现了与bool类型的自动转换，方便存放到数据库和前台显示

纯粹为了方便才写的这个类，娱乐而已

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public struct Sex {     public static readonly string FemaleString = "女";     public static readonly string MaleString = "男";       private bool _isMale;       public static implicit operator Sex(bool sex)     {         return new Sex { _isMale = sex };     }       public static implicit operator bool(Sex sex)     {         return sex._isMale;     }       public override string ToString()     {         return _isMale ? MaleString : FemaleString;     }       public static Sex Parse(string str)     {         if (string.Compare(str, MaleString, true) == 0)             return true;         else if (string.Compare(str, FemaleString, true) == 0)             return false;         else             throw new ArgumentOutOfRangeException("str");     } }