How to do multithreading, concurrency or parallelism in iOS Swift?

Question

Is there any way to create a worker thread in Swift?, for example, if there\'s a major functionality that requires a lot of calculations and hence causes the main thread to dela

Answer 1

You can use Grand Central Dispatch (GCD) for such tasks.

This is a basic example:

let backgroundQueue: dispatch_queue_t = dispatch_queue_create("com.a.identifier", DISPATCH_QUEUE_CONCURRENT)

// can be called as often as needed
dispatch_async(backgroundQueue) {
    // do calculations
}

// release queue when you are done with all the work
dispatch_release(backgroundQueue)