There are certainly other important caveats to mention with async. You were constantly getting NREs in the background. This being caused by the fact that tasks do not respect Unity Object lifetimes. Coroutines will stop when the object that started them is destroyed. Tasks will continue on regardless, and this means that they can continue outside of playmode, and through scene changes. To counter this you need to use cancellation tokens, and they're somewhat difficult to grasp. In reality almost every task you start should really take a cancellation token. Not only this, but there are situations you can get yourself into that completely silence exceptions occurring within a task-returning method. If you do not await a task it will not appropriately throw exceptions created within it. This can make bugs difficult to track down, and if you're not familiar with that fact it's a minefield.

@fahmyeldeeb2542

2 жыл бұрын

Great addition, thank you, I did not know this

@braniacba6842

2 жыл бұрын

Personal experience, rotating is fine yet setting material property blocks can lead to silence exceptions. Unity really doesn't like having its API called in another thread. I heard that the Unity team is improving the workflow with async/await, but for now, it's causing more pain than it alleviates in most cases.

@JianqiuChen

2 жыл бұрын

Oh wow, thanks for pointing these out.

@raii3944

2 жыл бұрын

Indeed, this. async / await workflow is definitely not a coroutine killer. I've spent Last 3 hours tracking down an exception that did not log nor give any hint that there is a problem other than a certain function just not calling. In more complicated scenarios this is would be a pain

@LagunaCloud

2 жыл бұрын

I think it's a mistake not to bring up async function garbage collection. There's a reason they created a "ValueTask" structure. Especially in game development you have to keep your head on top of the memory allocation and deallocation game. You can quickly start running into garbage collection issues if you're throwing willy nilly async functions everywhere.

I think I ought to mention that most of the advantages listed here in favor of async/await are also present in Coroutines, but he doesn't write the Coroutine version in a way to take advantage of them. For instance, when running Coroutines sequentially, you do not have to make a bunch of different functions and then a separate function to yield on each function sequentially. You can simply do what he does for the async function. You can have that function return IEnumerator (just like how he changes it to async) and run it using StartCoroutine. Then you simply yield return for each shape just like he does with the async version. So in code it looks like this: public IEnumerator BeginTest() { for (var i = 0; i yield return _shapes[i].RotateForSeconds(1 + i); } } Compare to the async version. It's identical. Similarly, when talking about ways to wait for all the Coroutines to finish he doesn't even mention WaitUntil, or the fact that you can simply yield on Coroutines after starting them. The later method leads to code which is very similar to what he writes for the async function: public IEnumerator BeginTest() { _finishedText.SetActive(false); Coroutine[] tasks = new Coroutine[_shapes.Length]; for (var i = 0; i tasks[i] = StartCoroutine( _shapes[i].RotateForSeconds(1 + i) ); } foreach (Coroutine task in tasks) yield return task; _finishedText.SetActive(true); } Which again is almost identical to his async version. The major advantage of async functions is the fact that you can return values from them like a Promise in Javascript. But Coroutines are native to Unity and are therefore better integrated into that system: for instance Coroutines line up with the frames of the engine as he mentions, async functions often continue even after you hit stop in the editor which he doesn't mention. Also, some default Unity methods (such as Start) can be converted directly into Coroutines simply by making them return IEnumerator.

@jerms_mcerms9231

Жыл бұрын

This is AWESOME! Thank you!

@diegonorambuena4194

Жыл бұрын

I didn't see this comment before, but it's a very helpful one. Thanks for showing examples and details of the Coroutines features

Perfect use cases, great samples for comparison. Really makes you eager to use Tasks in your code. On point tutorial, good work!

@Tarodev

2 жыл бұрын

Thanks! I tried to make the (voiced) use cases as practical as possible.

Too few developers who learn C# through just Unity understand that using IEnumerable for asynchronicity is not a typical thing in C# and that the purpose of the IEnumerable interface has literally _nothing_ to do with asynchronicity.

@RogerValor

2 жыл бұрын

true, but it depends on whether you have background in other languages (or even C# itself) or not. For me it was pretty clear that this is just using a general interface in some external task system. I think any Unity dev should learn C# indepently in any circumstance. This isn't so different for any issue where the Unity Engine is your event handler, even MonoBehaviour entrypoints.

Non-boring details from years of experience. I'm surprised of the way you've put all this information together in one video! Thank you!!!

Hey there , I just found your channel. I work full time as a C# backend dev and I always wondered how to apply all of these tools I use all the time like Tasks in Unity. I appreciate you doing these kinds of explanations nobody else on youtube is willing to do. Good work!

I think it's worth mentioning that async/await continues to work in the editor even after the game has stopped, unless you set an exit condition that takes this into account. Can lead to unexpected results, especially if moving, adding or removing scene objects, playing sound, etc. occurs inside asynchronous functions.

Almost spooky how well timed this is, having some trouble with Coroutine Sequentials and cancelling a Coroutine, so this is perfect! Great explanation and well spoken, definite subscribe! :D

Quick Tip. don't use async void because because any exceptions can disappear into a black hole. Try to get into the habit using async Task so that you know what the result of the function was (whether it succeeded or failed etc) if you want to be even more fancy you can also return a tuple wrapped in a task so you can return whether the function succeeded and also any other useful info if it failed, this will help when trying to debug the function so that you don't have to step through the entire thing. I like to use this pattern: async Task DoSomething() var result = await DoSomething().ConfigureAwait(false) if (result.success) { //Do another thing after success. } else { //Do something else after fail. Log($"DoSomething() failed because: {reason}"); }

@Tarodev

2 жыл бұрын

Great suggestion. You can still try/catch a void async method and get it's thrown error, but your technique is great for handled workflow errors.

@coloneljcd6041

6 ай бұрын

@@Tarodevthats actually not true, even a try catch wont get the error because its never returned, and it will crash your app

@thomasloupe

5 ай бұрын

@@coloneljcd6041 This is correct, any async void exceptions will propagate (bubble) up to the first non-async method, which can oftentimes be your application's entry point.

Nice work covering this subject and displaying the mulitple ways async/await can be used. Even a year+ on after the release of your video, its still a gold nugget!

I don't like comparing content creators, as everyone has a unique approach. But you're basically the Brakeys 2.0 in the void of Brakeys. GIving us more indepth, higher level tutorials that is exactly what the space needs. You definitely deserve much more Subscribers.

@Tarodev

2 жыл бұрын

This is truly the highest praise. Thanks Matt.

@dsbm2153

2 жыл бұрын

I think Brackeys is overrated. He never explained what his code did in particular which made learning difficult and fixing potential issues with the copy-pasted code impossible. Also, copy-pasting code just straight up isn't fun

@Tarodev

2 жыл бұрын

@@dsbm2153 If you look at some of his older videos you can see he did some pretty complex stuff and covered useful mathematics concepts, which also had deep explanations. Toward the end, I think he just had such a massive new-dev following he just ended up catering to them. I'm trying to avoid going full beginner-friendly by throwing in advanced stuff too.

@emiel04

2 жыл бұрын

@@Tarodev I love the advanced stuff, content online is almost always beginner level, having these more advanced concepts in a very good format is very nice. Thank you!

@Cielu1

8 ай бұрын

@@Tarodev You are doing such a great job on explanation. Niche on more mathematical / advanced concepts. We need it!

Everything you do, you do well! I am so excited to see your page gaining traction. It is well deserved

@Tarodev

2 жыл бұрын

Thanks Caleb, I'm excited too! I'm so glad my teachings are helping so many people now 😊

I've referenced this video many times now, as I'm finding more and more use cases for this. Thank you so much for showing this off!

Dude, this is easily among the best Unity content I've ever seen in youtube and I would DEFINITELY love that more advanced tutorial

Definitely like the workflow of using Tasks instead of coroutines. You have much better control over it and it certainly makes waiting for things to complete a little easier.

I love your super professional intro. :D

This is exactly what I was looking for. I love this video.

As you yourself said, yes, "Beautiful".

I really appreciate these concise tutorials. Thank you so much

Dude, thank you so much. I mean, really! You made a great masterclass of how to use properly Tasks, Async/Await. Now, I truly understand it. No more crappy code anymore.

For newbie Unity C# community, can't be without you

This was so handy, saved me a bunch of headscratching, thanks!

Fantastic video. I've always loathed using coroutines. Thank you!!

So helpful before my exam. Thank you so much.

Your are an absolute programming beast. I've never seen someone with so good code tutorials. I'm just commenting this here for you to keep up the good work and so that the algorithm rank you better and spread your channel around

never stop making content, thank you

Lovely. I come from a C# async/await web workflow and got into Coroutines when learning Unity. Am keen to refactor some of my code because of your video. Thanks!

Wow! I didn't know I needed this tutorial. Job well done, thank you.

When I first learned about Coroutines it was ground breaking, the peak of technology for my silly indie brain. Now I'm finding out about async/await/tasks and it's just wonderful. Truly amazing to see how there's always something new to learn.

So glad I found you, amazing tutorials. This will save me lots of headaches.

I will definitely have to keep this one in mind! 👍

You opened my eyes. Great vid!

Another great video Tarodev! I would love to see where you take a more advanced video on this topic and keep them coming!

I think this is the best Unity async/await tutorial I have ever seen. And I can swear I've seen pretty much of those. It would be great to see more advanced stuff delving into async uses in Unity.

@Tarodev

2 жыл бұрын

I really appreciate it Ricardo. That's pretty high praise

@soulinekki1130

2 жыл бұрын

Absolutely agree, I'm in awe at how on point is this video. Very clear example in very compact form.

This just taught me how async works finally. Thanks a ton!

Thanks for enlightening me about async & await, this will come to great use.

Subscribed! You really opened a whole new world to me...

Thank you for the great tutorials! Would definitely love to see those advanced tutorials!

Your videos are very useful, fun to watch, and nicely explained.

This is it man. Quality content!

Wow. Just wow. I wish every tutorial was just like this

WHAT. thats so op????? just found your channel, great stuff

This was incredibly useful. Exactly what I needed rn

@Tarodev

2 жыл бұрын

Take this tool and grow strong my child

Wow! That super professional intro

@Tarodev

2 жыл бұрын

Lol... yeah. Not sure what I was thinking

This is also super useful for loading levels asynchronously

This is so great. I use async and await for JavaScript stuff, I had no idea C# had this. I LOVE IT!

Holy crap this is amazing. I had no idea this was a thing and I am definitely putting this to use. Thank you!

This was awesome, would definitely love a deeper dive into this

I never knew about async, thank you for the informative video!

This was a great intro. Would love a deeper dive!

This is a nice tutorial, I have been using coroutines all the time and will surely start using the async/await in my future projects. Thanks :)

Thank you. I’ve been in Coroutine hell for a few days, this will work for exactly what I need. I think I can replace all my Coroutines with this. Again, thank you!

Great tutorial, thanks for this

Great video totally and look forward to advanced tutorial

Great guide. Covers all the points i was interested in

Just a great and enough deep explanation, rewatched it several times). Thanks

This is amazing info for 16 minutes. Well done. Also thanks for the Webgl warning.

Thank you! needed this

Amazing tutorial, well explained

Perfect video, loved it and subscribed. I'd love to see more of these videos.

coming from a javascript background and being familiar with Promises (and having trouble wrapping my mind around coroutines) this video is a lifesaver! thank you so much

@Tarodev

Жыл бұрын

And lucky for you, unity is focusing heavily on improving async work flows. Major updates coming soon!

Amazing stuff!

This is an extremely useful video, thank you!

love your content !

Great explanation! Keep the great work up!

What a great tutorial that I didn't even know I needed :3

@Tarodev

2 жыл бұрын

Go live your best async life

this is my first vid from you I've watched, but after 4 mins I subscribed instantly, such clear message and comprehensive explanation!

@Tarodev

2 жыл бұрын

Thank you so much! Glad to have you on board

Cool! Nicely explained.

That was my first time I easily used a hard topic, thank you. I will tell everybody how you meme'd a really good topic(Of course usage too). I will watch every use case video you will release. Hope there will be more meme intros too.

Clean video. Thanks a lot didnt know this thing even existed less go

Awesome video! A great way to start my day!

Advance tutorial workflow for async is a MUST ! :D

Thanks for the easy explanation :)

Video made me subscribe ! Great channel mate

Awesome video Tarodev - will definitely be using async more often now!

@Tarodev

2 жыл бұрын

You look to have some interesting tutorials on your channel! I'll sub and take a peak shortly

@DanPos

2 жыл бұрын

@@Tarodev Thanks a lot!

Found this video awhile ago, but I keep coming back because I forget the snytax or where in my code to implement the async or await functions. Thank you so much for this video as it really helped me on my projects and will continue to help me on future Unity projects.

@Tarodev

Жыл бұрын

I hope you watch the amazing intro each time

Awesome tool! Thanks.

Nice detailed and simplified tutorial

@Tarodev

Жыл бұрын

Thanks Taboo. I see you're binging my content 🙏

@tabooization123

Жыл бұрын

@@Tarodev Sure I am, they are helpful when I don't know where to improve myself. Thanks a lot

Great introduction! I've never heard of it and would love to learn about more advanced stuff.

super professional intro lol Easy to understand with indepth details as all your videos. Keep making such videos thanks

@Tarodev

Жыл бұрын

Not sure what I was thinking with that intro...

Yes please, more videos on advance scripting techniques

love the examples, awesome video! well described!

Just blew my mind. Thanks this will already save me so much trouble. Can't wait 😉 to watch the awaitable video next! Thanks a lot for this, Definitely getting my like!

@Sonic-ig1po

4 ай бұрын

Please read the first couple of comments, what this guy is doing is irresponsible generally and will hurt your code without a proper understanding of what is happening. No insult intended just a want to save you from untraceable errors.

@hermanusjohannesbesselaar2499

4 ай бұрын

@@Sonic-ig1po Thanks for taking the time to warn me about this. I will definitely look it some more. I started out using coroutines but thought the async await looked a lot cleaner. Just reading the comments is a scary education in itself.

Quality stuff, man! Keep it up

@Tarodev

2 жыл бұрын

I'll do my best 🤪

It's Perfect Tutorial!!!! Thank you~

@Tarodev

2 жыл бұрын

Yay!!

Another banger! This man just poops out quality content

amazing stuff

This is great. Thanks for sharing.

Man.. so many light bulb moments with this channel. You have such a great way of explaining things in simple ways that makes them so much easier to follow and understand. I've been chaining Coroutines for.. awhile now. I never knew you could just use Async to do it this way. Hah! Impressive. Cheers ;-)

Great video, thanks!

@Tarodev

2 жыл бұрын

Glad you liked it!

Yes an advanced one would be nice. Great tutorial btw!

Life saver !

It's very interesting, waiting for more advanced)

very good video! I can understand much better now

Would love to see that more advanced async workflow tutorial that you alluded to! You do a great job here.

great tut😀

Absolutely awesme video, consise and clear with great examples. You've got a new subscriber! ^^

@Tarodev

2 жыл бұрын

Thanks Dikran!

Love it.

Thanks! Pretty good video!

This tutorial focuses on one of my major problems, sequencing, being a quite unexperienced C# programmer. I will use this as my c# async bible as it solve two major issues I have. Great tutorial I must say.

@Tarodev

2 жыл бұрын

Glad it helped buddy. Good luck!