func fetchUsername() -> User { User(id: UUID(), username: "Anonymous") } func startSubscription(for user: User) { print("Starting subscription…") } } 这种方法解决了在备选方案中会出现的问题: 如果我们不使用lazy,那么fetchUsername()将在 state 的所有三种情况下都被调用,即使在一种情况下它没...
Learn how you can harness the power of SwiftData in your app. Find out how ModelContext and ModelContainer work together to persist your app's data. We'll show you how to track and make your changes manually and use SwiftData at scale with FetchDescriptor, SortDescriptor, and enumerate. ...
The way you can with SQLite, you can fetch data from Core Data performing queries using search criteria. Core Data isn’t only about storing relational data—it also offers additional features such as these:Tracking changes, and implementing undo or redo Caching or lazy loading of your ...
UTC与GMT含义完全相同。北京时区是东八区，领先UTC 8个小时。所以将UTC装换成北京时间时，需要加上8小...
isDataTimeout广告是否超时 showFromRootViewController:展示广告 bidPrice返回广告的eCPM,单位:分 bidFloor返回广告的底价,单位:分 sendWinNotificationWithPrice:竞胜之后调用, 需要在展示广告之前调用 price: 如天目从竞价队列中胜出,则传入广告返回的出价,如:[adView bidPrice](单位:分) ...
Threadly - Type-safe thread-local storage in Swift. Flow-iOS - Make your logic flow and data flow clean and human readable. Queuer - A queue manager, built on top of OperationQueue and Dispatch (aka GCD). SwiftQueue - Job Scheduler with Concurrent run, failure/retry, persistence, repeat...
dataStack.fetchAll(From<MyEntity>()) print(objects) } } 💡By default, CoreStore will initialize NSManagedObjects from .xcdatamodeld files, but you can create models completely from source code using CoreStoreObjects and CoreStoreSchema. To use this feature, refer to Type-safe CoreStoreObjects. ...
shared.data(from: url) if let string = String(data: data, encoding: .utf8) { return string } else { throw LoadError.decodeFailed } } catch { throw LoadError.fetchFailed } } let result = await downloadTask.result do { let string = try result.get() print(string) } catch LoadError...
reconstructor will attempt to fetch fragments from handoff nodes in addition to the usual primary nodes; a new `request_node_count` option (default `2 * replicas`) limits the total number of nodes to contact. * Added a delay before deleting non-durable data. A new configuration ...
(url: "https://github.com/apple/swift-syntax.git", from: "509.0.0") ], targets: [ .macro( name: "SomeMacrMacros", dependencies: [ .product(name: "SwiftSyntaxMacros", package: "swift-syntax"), .product(name: "SwiftCompilerPlugin", package: "swift-syntax") ] ), .target(name: "...