enums

问题 This question already has answers here : String to enum conversion in C# (8 answers) C# using numbers in an enum (7 answers) Closed 7 years ago . HI I have the following enum public enum Priority : byte { A=1, B+ = 2, B=4, C=8, D=16, E=32 } I want to add B+ in the enum but it is giving me error 回答1: You can add user friendly description for enum like below : enum MyEnum { [Description("This is black")] Black, [Description("This is white")] White } Ref. Link : How to have userfriendly names

问题 The solution consists of three classes: the SongGenre, the Song and the Library (+ Program). I am just following the instructions so most of coding comes from my lectures and the book and not much of the experience. It is what what you see and I am not really proud of it. Pointers are really appreciated. The main one is why the enum values can not be seen in another classes? This code has been fixed (see comments). namespace SongLibrary { [Flags] enum SongGenre { Unclassified = 0, Pop = 0b1,

问题 The solution consists of three classes: the SongGenre, the Song and the Library (+ Program). I am just following the instructions so most of coding comes from my lectures and the book and not much of the experience. It is what what you see and I am not really proud of it. Pointers are really appreciated. The main one is why the enum values can not be seen in another classes? This code has been fixed (see comments). namespace SongLibrary { [Flags] enum SongGenre { Unclassified = 0, Pop = 0b1,

问题 The solution consists of three classes: the SongGenre, the Song and the Library (+ Program). I am just following the instructions so most of coding comes from my lectures and the book and not much of the experience. It is what what you see and I am not really proud of it. Pointers are really appreciated. The main one is why the enum values can not be seen in another classes? This code has been fixed (see comments). namespace SongLibrary { [Flags] enum SongGenre { Unclassified = 0, Pop = 0b1,

问题 I'm trying to convert iOS error codes to String in Swift 2 (XCode 7.2). But converting to String returns the type name instead of the value name for system enums. This is what I'm trying: import CoreLocation import EventKit let clError = CLError.LocationUnknown let clErrorString = "\(clError)" // EXPECTED: 'LocationUnknown'. OBTAINED: 'CLError' let ekError = EKErrorCode.CalendarIsImmutable let ekErrorString = "\(ekError)" // EXPECTED: 'CalendarIsImmutable'. OBTAINED: 'EKErrorCode' But with

问题 I'm trying to convert iOS error codes to String in Swift 2 (XCode 7.2). But converting to String returns the type name instead of the value name for system enums. This is what I'm trying: import CoreLocation import EventKit let clError = CLError.LocationUnknown let clErrorString = "\(clError)" // EXPECTED: 'LocationUnknown'. OBTAINED: 'CLError' let ekError = EKErrorCode.CalendarIsImmutable let ekErrorString = "\(ekError)" // EXPECTED: 'CalendarIsImmutable'. OBTAINED: 'EKErrorCode' But with

问题 Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . Improve this question Say I have this enum: public enum MyEnum{ ValueOne = 1, ValueTwo = 2, ValueThree = 3 } And then this field/variable: public MyEnum myEnumInstance = MyEnum.ValueTwo; I need to get the name of myEnumInstance via reflection from another class . I tried:

问题 Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . Improve this question Say I have this enum: public enum MyEnum{ ValueOne = 1, ValueTwo = 2, ValueThree = 3 } And then this field/variable: public MyEnum myEnumInstance = MyEnum.ValueTwo; I need to get the name of myEnumInstance via reflection from another class . I tried:

问题 The following text is an excerpt from C Programming Language, 2nd Edition , written by the creator of the C language (so I presume it is correct): Although variables of enum types may be declared, compilers need not check that what you store in such a variable is a valid value for the enumeration. I have some doubts: For what cases in the C language doesn't the compiler check the value of an enum ? enum constants are not checked for some reason. Why not? What are the reasons? Since enum is

问题 The following text is an excerpt from C Programming Language, 2nd Edition , written by the creator of the C language (so I presume it is correct): Although variables of enum types may be declared, compilers need not check that what you store in such a variable is a valid value for the enumeration. I have some doubts: For what cases in the C language doesn't the compiler check the value of an enum ? enum constants are not checked for some reason. Why not? What are the reasons? Since enum is