Instance Methodswift 6.0.1_Concurrency
addTaskUnlessCancelled(priority:operation:)
Adds a child task to the group, unless the group has been canceled.
- iOS
- 13.0+
- macOS
- 10.15+
- tvOS
- 13.0+
- watchOS
- 6.0+
mutating func addTaskUnlessCancelled(priority: TaskPriority? = nil, operation: sending @escaping @isolated(any) () async throws -> ChildTaskResult) -> Bool Parameters
- overridingPriority
The priority of the operation task. Omit this parameter or pass
.unspecifiedto set the child task’s priority to the priority of the group.- operation
The operation to execute as part of the task group.
Returns
true if the child task was added to the group; otherwise false.
This method doesn’t throw an error, even if the child task does. Instead, the corresponding call to ThrowingTaskGroup.next() rethrows that error.
Other members in extension
Instance members
var isCancelled: BoolA Boolean value that indicates whether the group was canceled.
var isEmpty: BoolA Boolean value that indicates whether the group has any remaining tasks.
func addTask(priority: TaskPriority?, operation: sendingAdds a child task to the group.
func cancelAll() Cancel all of the remaining tasks in the group.
func next() async throws -> ChildTaskResult? func next(isolation: isolated (any Actor)?) async throws -> ChildTaskResult? Wait for the next child task to complete, and return the value it returned or rethrow the error it threw.
func nextResult(isolation: isolated (any Actor)?) async -> Result<ChildTaskResult, Failure>? Wait for the next child task to complete, and return a result containing either the value that the child task returned or the error that it threw.
func waitForAll(isolation: isolated (any Actor)?) async throws Wait for all of the group’s remaining tasks to complete.