Do you have practical experience implementing structured concurrency in projects?

Yes, in iOS development, structured concurrency is often implemented using Structured Concurrency in Swift, especially with the introduction of async/await.

Structured concurrency means that all asynchronous tasks have a clear hierarchy and lifecycle managed by a parent task. This helps prevent memory leaks, data races, and simplifies error handling.

A practical example is the use of Task and TaskGroup:

func fetchData() async {
    await withTaskGroup(of: Void.self) { group in
        group.addTask {
            await fetchUser()
        }
        group.addTask {
            await fetchPosts()
        }
        // All tasks will complete before exiting withTaskGroup
    }
}

Here, withTaskGroup guarantees that all child tasks complete before exiting the block, ensuring structured concurrency.

In projects, I used this approach for parallel data loading and synchronization, which significantly simplified the code and increased reliability.