combine

问题 Given the following code: enum MyError: Error { case someError } myButton.publisher(for: .touchUpInside).tryMap({ _ in if Bool.random() { throw MyError.someError } else { return "we're in the else case" } }) .replaceError(with: "replaced Error") .sink(receiveCompletion: { (completed) in print(completed) }, receiveValue: { (sadf) in print(sadf) }).store(in: &cancellables) Whenever I tap the button, I get we're in the else case until Bool.random() is true - now an error is thrown. I tried

问题 Given the following code: enum MyError: Error { case someError } myButton.publisher(for: .touchUpInside).tryMap({ _ in if Bool.random() { throw MyError.someError } else { return "we're in the else case" } }) .replaceError(with: "replaced Error") .sink(receiveCompletion: { (completed) in print(completed) }, receiveValue: { (sadf) in print(sadf) }).store(in: &cancellables) Whenever I tap the button, I get we're in the else case until Bool.random() is true - now an error is thrown. I tried

问题 Given the following code: enum MyError: Error { case someError } myButton.publisher(for: .touchUpInside).tryMap({ _ in if Bool.random() { throw MyError.someError } else { return "we're in the else case" } }) .replaceError(with: "replaced Error") .sink(receiveCompletion: { (completed) in print(completed) }, receiveValue: { (sadf) in print(sadf) }).store(in: &cancellables) Whenever I tap the button, I get we're in the else case until Bool.random() is true - now an error is thrown. I tried

问题 Given the following code: enum MyError: Error { case someError } myButton.publisher(for: .touchUpInside).tryMap({ _ in if Bool.random() { throw MyError.someError } else { return "we're in the else case" } }) .replaceError(with: "replaced Error") .sink(receiveCompletion: { (completed) in print(completed) }, receiveValue: { (sadf) in print(sadf) }).store(in: &cancellables) Whenever I tap the button, I get we're in the else case until Bool.random() is true - now an error is thrown. I tried

问题 Given the following code: enum MyError: Error { case someError } myButton.publisher(for: .touchUpInside).tryMap({ _ in if Bool.random() { throw MyError.someError } else { return "we're in the else case" } }) .replaceError(with: "replaced Error") .sink(receiveCompletion: { (completed) in print(completed) }, receiveValue: { (sadf) in print(sadf) }).store(in: &cancellables) Whenever I tap the button, I get we're in the else case until Bool.random() is true - now an error is thrown. I tried

问题 I'm building an app using SwiftUI and would like a way to convert a Binding<Value?> to a Binding<Value >. In my app I have an AvatarView which knows how to render an image for a particular user. struct AvatarView: View { @Binding var userData: UserData ... } My app holds a ContentView that owns two bindings: a dictionary of users by id, and the id of the user whose avatar we should be showing. struct ContentView: View { @State var userById: Dictionary<Int, UserData> @State var activeUserId:

来源： https://stackoverflow.com/questions/61782590/urlsession-datataskpublisher-retry-after-delay-on-specific-errors

来源： https://stackoverflow.com/questions/61782590/urlsession-datataskpublisher-retry-after-delay-on-specific-errors

来源： https://stackoverflow.com/questions/61782590/urlsession-datataskpublisher-retry-after-delay-on-specific-errors

来源： https://stackoverflow.com/questions/61782590/urlsession-datataskpublisher-retry-after-delay-on-specific-errors