TaskManager

TaskManager is a cache for asynchronous tasks in Swift. It allows you to manage the execution of tasks with a simple API that lets you add, cancel, and wait for tasks.

Usage

Creating a TaskManager

To create a TaskManager, simply instantiate it with a key type that conforms to Hashable. It is recommended to use an enum as the key type to avoid typos and ensure type safety:

enumTaskKey:Hashable{case fetchUserData(userId:String)case downloadFile(url:URL)}lettaskManager=TaskManager<TaskKey>()

Adding a Task

To add a new task to the TaskManager, use the task(key:priority:operation:) method. The key parameter is the unique identifier for the task, priority is the priority of the task (optional), and operation is the async operation to be performed:

taskManager.task(key:.fetchUserData(userId:"1234"), priority:.high){
// Perform async operation to fetch user data
return userData
}

Retrieving a Task Result

To retrieve the result of a task, use the value(for:as:) method. The for parameter is the key of the task, and as is the type of the result you expect to receive:

letuserData=tryawait taskManager.value(for:.fetchUserData(userId:"1234"), as:UserData.self)

or

letuserData:UserData=tryawait taskManager.value(for:.fetchUserData(userId:"1234"))

Canceling a Task

To cancel a task, use the cancel(key:) method:

taskManager.cancel(key:.fetchUserData(userId:"1234"))

Canceling All Tasks

To cancel all tasks, use the cancelAll() method:

taskManager.cancelAll()