Submits a block for synchronous execution on this queue.
func sync<T>(flags: DispatchWorkItemFlags, execute work: () throws -> T) rethrows -> T s8Dispatch0A5QueueC4sync5flags7executexAA0A13WorkItemFlagsV_xyKXEtKlF What are these?5ZAS4Submits a work item to a dispatch queue like sync(execute:), and returns the value, of type T, returned by that work item.
returns the value returned by the work item.
import Dispatchclass DispatchQueuestruct DispatchWorkItemFlagsconvenience init(label: String, qos: DispatchQoS = .unspecified, attributes: DispatchQueue.Attributes = [], autoreleaseFrequency: DispatchQueue.AutoreleaseFrequency = .inherit, target: DispatchQueue? = nil) class var main: DispatchQueue { get }class func concurrentPerform(iterations: Int, execute work: (Int) -> Void) class func getSpecific<T>(key: DispatchSpecificKey<T>) -> T? class func global(priority: DispatchQueue.GlobalQueuePriority) -> DispatchQueue class func global(qos: DispatchQoS.QoSClass = .default) -> DispatchQueue var label: String { get }var qos: DispatchQoS { get }func async(execute workItem: DispatchWorkItem) Submits a work item for asynchronous execution on a dispatch queue.
func async(group: DispatchGroup, execute workItem: DispatchWorkItem) Submits a work item to a dispatch queue and associates it with the given dispatch group. The dispatch group may be used to wait for the completion of the work items it references.
func async(group: DispatchGroup? = nil, qos: DispatchQoS = .unspecified, flags: DispatchWorkItemFlags = [], execute work: @escaping () -> Void) Submits a work item to a dispatch queue and optionally associates it with a dispatch group. The dispatch group may be used to wait for the completion of the work items it references.
func asyncAfter(deadline: DispatchTime, execute: DispatchWorkItem) Submits a work item to a dispatch queue for asynchronous execution after a specified time.
func asyncAfter(deadline: DispatchTime, qos: DispatchQoS = .unspecified, flags: DispatchWorkItemFlags = [], execute work: @escaping () -> Void) Submits a work item to a dispatch queue for asynchronous execution after a specified time.
func asyncAfter(wallDeadline: DispatchWallTime, execute: DispatchWorkItem) Submits a work item to a dispatch queue for asynchronous execution after a specified time.
func asyncAfter(wallDeadline: DispatchWallTime, qos: DispatchQoS = .unspecified, flags: DispatchWorkItemFlags = [], execute work: @escaping () -> Void) Submits a work item to a dispatch queue for asynchronous execution after a specified time.
func getSpecific<T>(key: DispatchSpecificKey<T>) -> T? func setSpecific<T>(key: DispatchSpecificKey<T>, value: T?) func sync<T>(execute work: () throws -> T) rethrows -> T Submits a block for synchronous execution on this queue.
func sync(execute workItem: DispatchWorkItem) Submits a block for synchronous execution on this queue.
func sync(execute workItem: () -> ()) struct Attributesenum AutoreleaseFrequencyenum GlobalQueuePriority