我正在使用<key name="InstallationFolder">
<string>
<value><![CDATA[my value]]></value></string>
</key>
EventKit's，我想模拟它以及EKEvent。
但是我不知道如何正确抽象EKEventStore EKEvent's和其他方法。
init(eventStore: EKEventStore)这里的错误是：“'Self'仅在协议中可用，或者作为类中方法的结果可用；您是说protocol EventStoring {
associated type Event: EventStoreEvent where Event.MatchingEventStore == Self
func save(_ event: Event, span: EKSpan, commit: Bool) throws
// Other methods of EKEventStore I use
}
extension EKEventStore: EventStoring {
typealias Event = EKEvent
}
protocol EventStoreEvent {
associatedtype MatchingEventStore: EventStoring
static func createEvent(eventStore: MatchingEventStore) -> Self
}
extension EKEvent: EventStoreEvent {
typealias MatchingEventStore = EKEventStore
static func createEvent(eventStore: MatchingEventStore) -> Self {
return EKEvent(eventStore: eventStore) as! Self
}
}
吗？”
和：“无法将类型'EKEvent'的返回表达式转换为类型'Self'”
'EKEvent'最后第七行，错误是：无法调用类型为class GenericEventManger<StoreEvent: EventStoreEvent> {
var store: EventStoring
required init(with eventStore: EventStoring) {
self.store = eventStore
}
func createEvent() -> StoreEvent {
let eventStoreEvent: EventStoreEvent = StoreEvent.createEvent(eventStore: store)
// Then some code where I configure the event...
try store.save(eventStoreEvent, span: .thisEvent, commit: true)
}
}
的参数列表的'createEvent'
第三，它是：无法调用类型为'(eventStore: EventStoring)'
更新由于我采用了Dan的建议，因此在实现过程中出现了同样的问题，因此我更新了问题
答案 0 :(得分：1)
我想在Dan的帮助下，到目前为止，我已经找到了两个问题的解决方案，但是我还没有对它进行彻底的测试：
首先，我像Dan推荐的那样更改了store的{{1}}属性的类型
GenericStoreManager然后我更改了在class GenericStoreManger<StoreEvent: EventStoreEvent> {
var store: StoreEvent.MatchingEventStore
func createEvent() -> StoreEvent {
let eventStoreEvent: EventStoreEvent = StoreEvent.createEvent(eventStore: store)
// Then some code where I configure the event...
try store.save(eventStoreEvent as! StoreEvent.MatchingEventStore.Event, span: .thisEvent, commit: true)
}
...
}
中获取返回值的方式，因此它也可以使用EKEvent的子类
extension EKEvent: EventStoreEvent