Structure

ThrowingTaskGroup.Iterator

A type that provides an iteration interface over the results of tasks added to the group. ある型、それはグループに追加されたタスクの結果それらすべてにわたる反復インターフェイスを提供します。

Declaration 宣言

struct Iterator

Overview 概要

The elements returned by this iterator appear in the order that the tasks completed, not in the order that those tasks were added to the task group. このイテレータによって返される要素それらは、タスクそれらが完了した順番に現れます、それらタスクがタスクグループに加えられた順番にではなく。

This iterator terminates after all tasks have completed successfully, or after any task completes by throwing an error. このイテレータは、全てのタスクが成功裏に完了した後に終了します、または何らかのタスクがエラーをスローすることによって完了した後に。 If a task completes by throwing an error, it doesn’t return any further task results. After iterating over the results of each task, it’s valid to make a new iterator for the task group, which you can use to iterate over the results of new tasks you add to the group. You can also make a new iterator to resume iteration after a child task thows an error. For example: 例えば：

group.addTask { 1 }
group.addTask { throw SomeError }
group.addTask { 2 }


do { 
    // Assuming the child tasks complete in order, this prints "1"
    // and then throws an error.
    for try await r in group { print(r) }
} catch {
    // Resolve the error.
}


// Assuming the child tasks complete in order, this prints "2".
for try await r in group { print(r) }