编译器错误 RxSwift：使用未解析的标识符“Materialize”

Question

我将 RxSwift 库添加到我的项目中。但是当我尝试运行该应用程序时，我总是遇到编译器错误，例如 Use of unresolved identifier 'Materialize'。此错误发生在 Observable +Single.swift 类。下面提到的错误发生方法。请帮助我如何解决这个问题。

extension ObservableType {
     public func materialize() -> Observable<Event<E>> {
        return Materialize(source: self.asObservable())
    }
}

extension ObservableType where E: EventConvertible {
       public func dematerialize() -> Observable<E.ElementType> {
        return Dematerialize(source: self.asObservable())
    }
}

Answer 1

这是因为 Materialize 类不公开。尝试使用小写的“m”。

extension ObservableType {

    /**
     Convert any Observable into an Observable of its events.
     - seealso: [materialize operator on reactivex.io](http://reactivex.io/documentation/operators/materialize-dematerialize.html)
     - returns: An observable sequence that wraps events in an Event<E>. The returned Observable never errors, but it does complete after observing all of the events of the underlying Observable.
     */
    public func materialize() -> Observable<Event<E>>
}