IAsyncEnumerable, My Favorite C# 8 Feature That No One Is Using

[@amantinband]

Hope you enjoyed the video! Small correction (9:18), ForEachAsync doesn't "materialize" the IAsyncEnumerable. It iterates over it, similar to the await foreach we wrote earlier. Here is the underlying source code: github.com/dotnet/reactive/blob/85f1eb7c53e27cccdbeee3e0b044916168843fcc/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ForEach.cs#L30

[@MilanJovanovicTech]

System.Linq.Async? I learned something new 😁

[@amantinband]

Yeah it’s pretty sweet 😎

[@JDevCode]

Are the 2 best channels on KZbin, I learned so much with both. Goats

[@jamesmussett]

Im lucky enough to use it on a daily basis. Extremely useful when working with sensors, networking, or any kind of real time streaming where the data being returned can potentially be infinite. Great video 👍 keep it up!

[@amantinband]

Sounds interesting 👀

[@Misteribel]

Great explanation. For F# programmers, consider using the 'TaskSeq' Nuget Lib, which brings 'await foreach' to F# using Computation Expressions like 'task {...}' and 'seq{...}'.

[@Linkario86]

Amichai, I'm so glad I found your channel. You're the GOAT

[@charlesstacyharrisiii2593]

Nicely done! I love the way you explain things. You're a natural teacher!

[@Osirus1156]

I agree with your opinion on why it wasn't more widely accepted. I used it quite a bit on a project and we ended up needing to write helper methods just to work with them when those helpers could have just been built in. I am hoping someday Microsoft gives it another pass to consolidate it. It is very nice when calling paged APIs though.

[@egtdig4411]

Hey, first time viewer of the channel. Thumbs up for the short & informative video, liked it very much. Could you please share what kind of skin are you using for your terminal? It seems very useful.

[@amantinband]

Thanks! You can follow this step by step: www.hanselman.com/blog/my-ultimate-powershell-prompt-with-oh-my-posh-and-the-windows-terminal

[@alexlo2621]

Thank u for the video. I want to suggest another topic related to DDD/Design/Architecture. Could u post a video about anemic code/design? Cons and pros. Thank u.

[@amantinband]

That's a great topic. I'll see if I can create a compelling video. Are you following @codeopinion? He covers this topic in a few different videos, I think

[@mlhtest5928]

How do you get IAsyncEnumerable to work in an api contoller or minimal api? No matter what I try it still buffers the responses and sends them all at one time. Thanks

[@nayanchoudhary4353]

I just used it today and was wondering about cancellationtoken usage. And just saw your video!Great timing! 🙂 I see you have used break keyword without cancellation token. I couldn't find such concise explanation anywhere. Thank you! But can you explain use of cancellation token with iasyncenumerable?

[@amantinband]

I might do a follow up video on this. Thanks, Nayan!

[@SilasPeters]

The biggest surprise to me is how easy it is to implement lazy code using yields eveywhere!

[@deus_nsf]

What about EF Core though? How will it interact with it? One SQL request per element of the collection? Or will it fetch all the collection like with a standard List?

[@pianoman1973]

Great tutorial !

[@arnonoordover4054]

Correct. Even in the XStreamingElement you cannot use this…😢

[@auronedgevicks7739]

lol by the 3min mark I already tuned out. KISS

[@MyFuzzyAfterlife]

Random question, but what do you use to draw the boxes and arrows on your screen ? In today’s remote working environment I’m really looking for something this

[@amantinband]

ZoomIt. Check out aka.ms/ZoomIt

[@alonmore28]

Would you use it as a return type in web api controllers?

[@zlatkorekic]

Great content. Highly appreciated 👍

[@zlatkorekic]

Please update VS Code, that notification is taking my attention to often 😁

[@amantinband]

Hahah it's already updated in the video coming out today 😉

[@OmriKipi]

Thanks ! great video , but the sound quality is not great.

[@amantinband]

I'm struggling to get good sound with the Blue Yeti. I hope the video coming out today has better sound quality. Please let me know if it's still not great! Otherwise, I think it's time to get a better mic 🙂

[@caseyspaulding]

Thank you!

[@pilotboba]

Do you plan to get back to the DDD / Clean Arch series? :)

[@amantinband]

Of course, there are still many great topics to cover 👀

[@PetrVejchoda]

this is friggin gamechanger!!! How do I not know about it?? Whares tha catch?? Can you turn it into IObservable??

[@PetrVejchoda]

can you turn IObservable into IAsyncEnumerable? What the hell? I want to know more!!!

[@PetrVejchoda]

being able to turn this into IObservable would make some stuff sooooo easy!!

[@thanzeeljalaldeen]

is it possible to get the source code for this please?

[@justinian.erdmier]

This is awesome and I think will solve a pretty nasty bit of code I haven't been able to simplify. One question: Isn't printing the statement "Received 10 numbers" a bit misleading? The Console.WriteLine() only gets called once, but if the NumbersClient only returns a page of 10 (with the range of 0-9), then 11 would only be in our final results if the NumbersClient returned a second page (so actually 20 numbers). I'm not too familiar with the yield keyword, so that part kind of confused me.

[@amantinband]

Yes, it isn't very clear. It would have been clearer to put it right under the call to the client. Sorry about that 🙂

[@MrAsishMohapatra]

Is it not too much advertisement in a 10 minutes video you have 4-5 ads in between and in the beginning 2?

[@amantinband]

Yikes.. KZbin controls all my ad placements before and during the video

[@HadrielWonda]

System.Linq.Async?? I wonder how long that has been functional 😊

[@robertmrobo8954]

Why was it named IAsyncEnumerable instead of IEnumerableAsync?

[@meetingattender8132]

Cuz it isn't a method

[@SolomonTheStoryTeller]

all clean architecture implementations I have seen in my 15+ years experience and DDD across several organizations (multi billion dollars)were mostly terrible. I have come across a project two years ago that was .net core 3.1 vertical slice cqrs and mediator, fluent result, and angular as frontend. It was a beautiful project to work with. Clean architecture on the other hand, i am done with it

[@amantinband]

I've worked on and researched many projects within Microsoft and public open-source projects, and I tend to agree. Working in a small aligned team (1-5 devs) is a whole different story than bigger, unaligned teams.

[@predigr]

So, what architecture to use? where can we find some documentation?

[@juke-duke]

Are you using Vim for your keybinds?

[@amantinband]

Yup 👍

[@Abushalabi]

Very bad example to show the benefits of IAsyncEnumerable