Best way to enum NSString

Question

Im digging for ways to enum objc object such as NSString, I remember there a new feature in a version of Xcode4+ which offering a new way to enum , but not clearly. Anyone know

Answer 1

Update in 2017

Recent down votes drew my attention, and I'd like to add that enum is really easy to work with String now:

enum HTTPMethod: String {
    case GET, POST, PUT
}

HTTPMethod.GET.rawValue == "GET" // it's true

Original Answer

Unfortunately I ended up using:

#define HLCSRestMethodGet       @"GET"
#define HLCSRestMethodPost      @"POST"
#define HLCSRestMethodPut       @"PUT"
#define HLCSRestMethodDelete    @"DELETE"
typedef NSString*               HLCSRestMethod;

I know this is not what OP asked, but writing actual code to implement enum seems to be an overkill to me. I would consider enum as a language feature (from C) and if I have to write code, I would come up with some better classes that does more than enum does.

Update

Swift version seems to be prettier, although the performance can never be as good.

struct LRest {
    enum HTTPMethod: String {
        case Get = "GET"
        case Put = "PUT"
        case Post = "POST"
        case Delete = "DELETE"
    }
    struct method {
        static let get = HTTPMethod.Get
        static let put = HTTPMethod.Put
        static let post = HTTPMethod.Post
        static let delete = HTTPMethod.Delete
    }

}