How to use async / await keywords in Swift

How to use async / await keywords in Swift | Swift Concurrency #3

Рет қаралды 24,269

2 жыл бұрын

Async and Await are the two most common keywords used in Swift Concurrency. We will use them in every video going forward - and likely multiple times per video! In this video, we will take an in-depth look into what these keywords are really doing behind the scenes. Understanding this will save you hours of debugging!
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Пікірлер: 47

@KimbrellBrad 2 жыл бұрын

I have looked at Async quite a bit from many different sources. This explanation "hit me in the head" or was perfect for my understanding. Thanks for this new series - it is very timely for most of us!

@markaurelius61 2 жыл бұрын

That cleared up a lot of my confusion about async await. Thanks for the extra level of detail by showing the current thread numbers.

@kdtechniquesofficial6153 Жыл бұрын

Did @Escaping then Combine videos came. After several months Nick explains about Async & Await. And I'm like here we go again. hehe.. Awesome work as always Nick.

@penguinwolf0125 Жыл бұрын

Simply fantastic simulation, awesome.

@suryakantsharma6761 Жыл бұрын

Great work!! Mind-blowing. Keep it up

@bruhmoment3731 2 жыл бұрын

Very well explained!

@BABEENGINEER Жыл бұрын

Love this explanation! More videos like this!

@SwiftfulThinking Жыл бұрын

Thanks!

@mrtayyabmughal7209 2 жыл бұрын

Awesome Async!

@alexbui0609 Жыл бұрын

Great explanation!

@vladislavwhatislove7156 Жыл бұрын

the best explanation! Thank you =)

@jonothen2212 Жыл бұрын

thanks bro, this is great helped me got rid of that purple warning

@Manish_Sahu 3 ай бұрын

super easily explained the topic

@GloverCom Жыл бұрын

Brilliant. Huge Help!

@GilbertLei-ih5lc 2 ай бұрын

well explained. thank you!

@andresraigoza2082 2 жыл бұрын

Awesome!!! Thank you so much.

@lizakryshkovskaya7412 Жыл бұрын

Great job! 🙏

@harshyadav9220 2 жыл бұрын

Mybe Simplest Video but also quite Important one.

@Nick-gj9gz 2 жыл бұрын

Best one I've seen

@emdutt4012 Жыл бұрын

brother Nick, I am using Xcode 14 every time it goes background thread. for example, author1 or something 2 is in the background thread .

@kdtechniquesofficial6153 Жыл бұрын

"If it doesn't work, I probably need a new job, but It did work" LOL... 😂😂😂😂😒😒😒

@valentine1925 Жыл бұрын

good quality tutorials!

@SwiftfulThinking Жыл бұрын

Glad you like them!

@AntonR8 16 күн бұрын

Class property 'current' is unavailable from asynchronous contexts; Thread.current cannot be used from async contexts.; this is an error in Swift 6

@paulancajima 2 жыл бұрын

Is there a chance await hangs forever? Is there a timeout config?

@josemanuelortizsanchez4983 Жыл бұрын

Thanks!

@kr1s0404 Жыл бұрын

at 3:26, I laughed so hard on this hahahahaha ... great work Nick!

@user-mp2wv8db5o Жыл бұрын

Hi, Thanks a lot for your work! I have a question here. I called function addAuthor1() several times and I never get main thread as you have. What can be the problem here? Or is it some changes in swift concurrency?

@panosjapan7 10 ай бұрын

Me too. author1() always runs on the Main thread. Not sure why.

@lolrie 7 ай бұрын

Same - seems like addAuthor1() runs on background thread by default

@3ilz Жыл бұрын

Sorry still confused as to why author2 and something2 are in the background threads even though they are being ran in a MainActor?

@tutecodes3631 Жыл бұрын

In my case when i call addAuther1() from onAppear it shows null in thread name following warning receives Class property 'current' is unavailable from asynchronous contexts; Thread.current cannot be used from async contexts.; this is an error in Swift 6

@brandonhopkins3438 Жыл бұрын

same. Thread.current not available in async appaz

@eamdude Жыл бұрын

Why will it not work on macOS? Even running on Catalyst does not show any images, it seems like the URLSession calls doesn't work. If I compile for iPad it is o.k. all three different ways.

@911lalala Жыл бұрын

I have an error in 08:09, and it is called "Class property 'current' is unavailable from asynchronous contexts; Thread.current cannot be used from async contexts.; this is an error in Swift 6" What is it means?

@emdutt4012 Жыл бұрын

use only Thread() instead of Thread. current.

@911lalala Жыл бұрын

@@emdutt4012 Thanks bro

@woozoobro Жыл бұрын

Your Joke is always funny lol

@1slyboy 8 ай бұрын

NOTE: Class property 'current' is unavailable from asynchronous contexts; Thread.current cannot be used from async contexts.; this is an error in Swift 6 For the purpose of this tutorial the warning can be ignore, but you should avoid trying to get access to Thread.current in production. You can however still use thread.isMainThread

@guillaumeramey 2 жыл бұрын

Hi Nick, thank you for another great video ! I saw that you can add @MainActor to your class so you don't need to specify it inside the functions, is it a good practice or not ?

@SwiftfulThinking 2 жыл бұрын

Yea it is good practice, but depending on the situation. I have a whole video on GlobalActors and the @MainActor later in this series!

@wjcnwjcn 2 ай бұрын

Task.sleep(for:tolerance:clock:) in iOS 16 is nicer than Task.sleep(nanoseconds:) in iOS 13.

@mamazur 10 ай бұрын

.onAppear{ Task{ await viewModel.addAuthor1 No 'async' operations occur within 'await' expression What is going on? Please help

@hashcat5721 Жыл бұрын

The author has an error, we do not get into the main stream. line 37 - to be moved to await MainActor.body { } await MainActor.run(body: { let author2 = "Author2 : \(Thread.current)" self.dataArrat.append(author2) let author3 = "Author3 : \(Thread.current)" self.dataArrat.append(author3) })