Question 1

Is the Async library still maintained for Swift?

Accepted Answer

No, the project is explicitly marked as no longer maintained on GitHub, so it's not recommended for new projects due to lack of updates and support.

Question 2

How does Async compare to using DispatchQueue directly in Swift?

Accepted Answer

Async provides syntactic sugar over GCD, making code cleaner with chainable syntax, but it adds a dependency and doesn't offer features beyond what GCD can do natively. It's best for readability over raw GCD calls.

Question 3

How to handle errors in Async Swift library?

Accepted Answer

Async doesn't have built-in error handling for chained blocks; developers need to manage errors within each block or use additional mechanisms, which can be less elegant than modern Swift concurrency's try/await patterns.

Question 4

Can I use Async with SwiftUI for asynchronous updates?

Accepted Answer

Yes, you can use Async to dispatch UI updates to the main queue, but for SwiftUI, integrating with its own concurrency models like async/await or Combine might be more idiomatic and future-proof.

Question 5

Async vs Combine: which is better for asynchronous programming in Swift?

Accepted Answer

Async is focused on GCD syntax sugar for dispatch queues, while Combine is a reactive framework for handling asynchronous events over time. Choose Async for simple queue management and Combine for stream-based or reactive scenarios.

Question 6

How to cancel a running async task with Async library?

Accepted Answer

Cancellation in Async only works for blocks that haven't been dispatched yet; once a block starts, it cannot be canceled, so you need to implement custom logic for ongoing tasks within the blocks themselves.

Async

What is Async?

Overview

Use Cases

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Pros & Cons

Pros

Cons

Frequently Asked Questions