Initializer

init(priority:operation:)

Runs the given nonthrowing operation asynchronously as part of a new top-level task on behalf of the current actor.

Declaration 宣言 

@discardableResult init(priority: TaskPriority? = nil, operation: @escaping @Sendable () async -> Success)
Available when Failure is Never. FailureがNeverである時に利用可能です。

Parameters パラメータ

priority

The priority of the task. Pass nil to use the priority from Task.currentPriority.

operation

The operation to perform.

Discussion 解説

Use this function when creating asynchronous work that operates on behalf of the synchronous function that calls it. Like Task.detached(priority:operation:), this function creates a separate, top-level task. Unlike Task.detached(priority:operation:), the task created by Task.init(priority:operation:) inherits the priority and actor context of the caller, so the operation is treated more like an asynchronous extension to the synchronous operation.

You need to keep a reference to the task if you want to cancel it by calling the Task.cancel() method. Discarding your reference to a detached task doesn’t implicitly cancel that task, it only makes it impossible for you to explicitly cancel the task.

See Also 参照

Creating a Task タスクを作成する

init(priority: TaskPriority?, operation: @Sendable () -> Success)
Runs the given throwing operation asynchronously as part of a new top-level task on behalf of the current actor.
Available when Failure is Error. FailureがErrorである時に利用可能です。
static func detached(priority: TaskPriority?, operation: @Sendable () -> Success) -> Task<Success, Failure>
Runs the given throwing operation asynchronously as part of a new top-level task.
Available when Failure is Error. FailureがErrorである時に利用可能です。
static func detached(priority: TaskPriority?, operation: @Sendable () -> Success) -> Task<Success, Failure>
Runs the given nonthrowing operation asynchronously as part of a new top-level task.
Available when Failure is Never. FailureがNeverである時に利用可能です。
static var currentPriority: TaskPriority
The current task’s priority. 現在のタスクのもつ優先度。
Available when Success is Never and Failure is Never. SuccessがNeverであるそしてFailureがNeverである時に利用可能です。