我有一个协议RequestType,它具有如下的relatedType模型。public protocol RequestType: class { associatedtype Model var path: String { get set }}public extension RequestType { public func executeRequest(completionHandler: Result<Model, NSError> -> Void) { request.response(rootKeyPath: rootKeyPath) { [weak self] (response: Response<Model, NSError>) -> Void in completionHandler(response.result) guard let weakSelf = self else { return } if weakSelf.logging { debugPrint(response) } } }}现在,我试图对所有失败的请求进行排队。public class RequestEventuallyQueue { static let requestEventuallyQueue = RequestEventuallyQueue() let queue = [RequestType]()}但是我在线上看到错误,let queue = [RequestType]()因为Protocol RequestType具有Self或associatedType要求,因此只能用作通用约束。
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