Swift 4 Migration - Inheritance from non-protocol, non class AnyObject

Question

I have my Swift 3 project that I wanted to convert to Swift 4.

When compiling after conversation I get a few errors (all the same) regarding Inheritance from non-protocol.

This is the class that is triggering the error:

import Foundation
import ObjectMapper


//MARK: - Equatable
func ==(lhs: ProcedureSearchModel, rhs: ProcedureSearchModel) -> Bool {
    return lhs.hashValue == rhs.hashValue
}

class ProcedureSearchModel : AnyObject, Mappable, Hashable {

    var procedureUid : String = ""
    var cpt : String = ""
    var description : String = ""

    required init?(map: Map) {

    }

    //MARK: - Hashable
    var hashValue : Int {
        get {
            return procedureUid.hashValue
        }
    }


    init (procedureUid : String, cpt: String, description : String) {
        self.procedureUid = procedureUid;
        self.cpt = cpt;
        self.description = description
    }

    // Mappable
    func mapping(map: Map) {
        procedureUid    <- map["ProcedureUid"]
        cpt         <- map["CPT"]
        description  <- map["Description"]

    }


}

Any clue on how to resolve this issue?

Thanks

Answer 1

您的类定义不能包含AnyObject。 AnyObject不是类或协议。

您要么需要从类定义中删除AnyObject，要么将其替换为NSObject（如果您希望它是与Objective-C兼容的类。

class ProcedureSearchModel : Mappable, Hashable {

}

或者：

class ProcedureSearchModel : NSObject, Mappable, Hashable {

}