Kotlin Coroutine Builders: launch, async, and runBlocking along with GlobalScope companion object

[@SriyankSiddhartha]

00:00 Introduction
01:33 Coroutine Builders
02:57 Purpose of GlobalScope
08:02 launch coroutine builder
15:02 async coroutine builder
19:56 runBlocking coroutine builder
25:02 Summary
26:15 What's Next?

[@khaledsaif3085]

can we get the pdf of the slides used in your videos ? Those would be very helpful for us

[@jaserq]

i am following you from 7 years .. you have a style of teaching . you are proffesional . thank you

[@chennamsettysijuchennamset4670]

Way of explaining is excellent 👌

[@sagarghare9829]

There are two ways to start coroutines, and they have different uses:
launch builder will start a new coroutine that is “fire and forget” - that means it won’t return the result to the caller.
async builder will start a new coroutine, and it allows you to return a result with a suspend function called await.

[@yashwant_vadali]

Hands down. Amazing explanation. Thank you so so much. Very genuine and easiest explanations of all.

[@rahulh6711]

Learnt kotlin from your videos only and now coroutines. Thank you so much

[@siddharthashankar8396]

I watch ur video and its very helpful for us. Can u add series number also so next video can find and watch easily.
eg
Coroutine 1: Kotlin Coroutines: Explore what are coroutines in kotlin. Threads vs. Coroutines.
Coroutine 2: Kotlin Coroutine Builders: launch, async, and runBlocking along with GlobalScope companion object.
Hope u wll understand...
otherwise its difficult to find which is next video...

[@samuel8mile]

Very good man!! Keep going..don't stop the videos!!

[@kktechnology2684]

Good video , sound and representation are very good.

[@ajeenadev6636]

Thanks, Sriyank your videos and class are very clear and informative

[@jaloliddinabdullaev2310]

Thank you bro for making understandable video, I appreciate your work.

[@redfox6089]

Bravo!!! Excellent teaching skills you have!!!

[@sunilkumar-zl6eo]

Great teaching Sir....Respect from heart.....keep Continue...

[@khairul640]

Thanks Sriyank ..your videos are concise and to the point. Please keep sharing knowledge like this..just one thing can you please create a playlist on the Coroutine Videos?

[@nandhinikajendhiran4634]

Thank you Android God..clear explanation.. Thanks a lot...

[@shwetapathak5240]

Hey Sriyank..you are awesome.. thank you for being back again..I was wondering why you stopped making videos....

[@smartherd]

More to come!

[@niveditaghosh7899]

Hi Sriyank,
I am very thankful to you for making Android simpler. I got deep knowledge in android along with Kotlin. Can you please please make a course over MVVM architecture???

[@smartherd]

Sure

[@rasoolmohamed4788]

in layman's language, nice and simple, and Perfect!

[@kgkg9829]

Perfect explanation. Thank you very much.

[@jeebanbagdi3396]

#2:24 GlobalScope are Companion Object.
But GlobalScope are singleton object i think.

[@AkashJhaDDN]

Thankyou for sharing your knowledge

[@dibyaranjanmishra4272]

excellent explanation

[@kushjaiswal9364]

Sir i don't know kotlin so i am wating for your flutter tutorials....plz sir understand the problem....

[@parveensharma2270]

Sid nice tutorial

[@amitmondal7427]

Thanks again.

[@jayantkumar1954]

It's just awesome.. Thank you sir 👍

[@yuruar]

Amazing video

[@soumayamondal6915]

Thank you sir

[@anithamannem9880]

Please explain about Dispatchers

[@smartherd]

Soon

[@jagadhisshdeveloper1689]

Tq very much sir..

[@smartherd]

U r welcome

[@vengateshm2122]

You are a smart nerd.

[@atulpradhan6113]

thanks

[@roopkishore785]

I am not able to use "launch" to create a coroutine, it's showing = Unresolved reference: launch, Please tell what to do?

[@sohamshinde1258]

fine

[@kushjaiswal9364]

Sir plz provide advance tutorials on flutter....

[@Rajmanov]

the best!

[@kalimullakalim5258]

Thank u

[@sagaravhad5198]

Thank you

[@TheMyth2.9]

Very good explanation. But Kotlin is making things confusing. Just putting a string like that without any return statement is very confusing. When I try just launch I get launch reference not found

[@jagadhisshdeveloper1689]

Sir please do a video on flow and withContext sir for safe api call in single place sir...or any course u have sir.. on that

[@smartherd]

Sure

[@jagadhisshdeveloper1689]

@@smartherd tq very much Guruji

[@rahulhawge2107]

This is gold stuff

[@jeebanbagdi3396]

As per doc and u also saying that async builder is not associated with job object. But with async builder we can return job object and also use job.join() for wait to complete async block.
How? I am just confusing..

[@thewalker3491]

Sir plz make videos on advance flutter

[@kushjaiswal9364]

Sir is java necessary for Kotlin....plz guide sir....

[@smartherd]

Not necessarily but it helps to understand concepts

[@safwenchaieb2915]

amazing explanation

[@shivamagrawal2284]

Please create a demo app which includes coroutines

[@vengateshm2122]

Why do we need Dispatchers.IO for network operation if coroutine does not block the current thread?

[@MusicWorld-fn1zq]

How do i write launch and async funs in a main thread??

[@ravidrinek3641]

What is the diff between application lvl thread and the main/UI thread? when using GlobalScope u said it auto uses the application lvl thread and not the main/UI thread (like the 'localScope' launch does when it was called from the main/UI thread) . from my understanding, the application lvl thread IS the main/UI thread

[@mikec4220]

Hi Ravid, I think you are confusing the Scope with the Thread here. The GlobalScope uses the application level Scope which will keep the coroutine alive and working on it's thread (whatever the thread is) as long as the application is running, while creating a Local Scope coroutine it will function as long as the local scope (activity, fragment, etc..) is running.

[@vengateshm2122]

class Calculator {
fun Double calculateArea(var radius : Double){
val area = 0.0
val job = CoroutineScope.launch {
area = 3.14 * radius * radius
}
job.cancel();
return area
}
}
Assume I am not invoking this in android in activity or fragment or view model or service which has a life cycle.
I am just invoking in a kotlin code main() function.
My question is do I need to explicitly cancel the job after area is calculated or whenever the function is executed the coroutine will be cancelled automatically.

[@mohsanikram3569]

I think when normal coroutines done its work, it cancel/finish itself, we don't need to finish or cancel by ourself.

[@vengateshm2122]

@@mohsanikram3569 Thank you.

[@vishalthapa1440]

why runBlocking is used only for testing?we can use globalscope also for test?cant we?

[@mikec4220]

might be a bit heavy to use GlobalScope

[@Couple8541]

Any one please .
Difference b/w delay and job. ?

[@my_love_sanatan]

watch on 2x