Multithreading & Async in iOS | A Basic Introduction

Learn how to use dispatch queues to perform tasks on a background queue in iOS with Swift.
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[@johncarson3333]

Dude I was lost in the sauce with dispatch queue and that was a super legit explanation thank you

[@OlegK-h6x]

Понятное объяснение. Спасибо!

[@kevinbahojb]

Thank you for your detailed and clear explanation, it was very helpful and understandable.

[@SamMeechWard]

You are welcome 🤗

[@dashadavid]

Hello Sam, great video! I understand more on DispatchQueue now thanks! I do have a question for you about this subject. I was wondering if I may ask you for some help please? thanks again for making this video and hope to hear from you soon

[@cios3917]

What is the difference between sync vs async?

[@SamMeechWard]

One is synchronous and the other is asynchronous 🤣

[@SamMeechWard]

print("a")
backgroundQueue.async {
print("b")
}
print("c")
The short answer is: the order that these will be printed out is a, c, b. If you change async to sync, the order will be a, b, c. Even though print("b") happens on a different queue, the main queue will still wait for it to complete if we use a sync block. sync is not usually desirable.

[@tenminutetokyo2643]

That's a weird place for a fireplace.