Dart Futures - Flutter in Focus

[@amirgamil]

The quality of these videos is astounding. Please keep 'em coming!

[@acavals8080]

Dude, you just won the Nobel prize for Simplicity! I struggled to understand how Future works when I started to use Firebase; now, it is all clear. I'm in love with Dart & Flutter.

[@StingSting844]

Gift boxes dont contain errors bro! That would be a sad day

[@sauloAndrioli]

If your gift box comes with a pair of socks, it's definitely an error

[@johnjamesflashman6856]

It could have arrived by Australian Post and most likely broken.

[@ChumX100]

It's like receiving a ticking box. You don't know if it's a cool new clock or a bomb.

[@sodiboo]

nice

[@Ahsankhan_yt]

Maybe gift box contained Galaxy Note 7

[@mgorn]

This portrayal of the Future as a superposition of result and error was approved by Schrödinger and his cat.

[@amirgamil]

And wasn't.

[@zewafff]

this comment is way underrated i guess Schrodinger isnt that well known :/

[@mr.p215]

@@zewafff it also isn't underrated

[@adamtak3128]

Any chance we can get a comprehensive flutter team created course with multiple little app builds to learn the concepts and finally a large app putting everything together?

[@jorgevega806]

This could be awesome

[@StingSting844]

Yes. Its available in appbrewery.co at just 10 bucks

[@leondroidgeeks]

There are already a lot of Cookbooks, Codelabs, Tutorials and Samples on the flutter.dev page. Have a look

[@tanmaythakral257]

You can check out course by Angela yu on Udemy. It's exactly how you want .

[@PankajNikam]

Agree with all who mentioned app brewery. Angela is an excellent instructor. I am more than 70% done with the course and boy, it's awesome 👍

[@pranavbhagwat1734]

Great video, simply put but with sufficient detail for beginner devs!

[@sayyidj6406]

i was learning flutter 1 years ago, and i falling in love with this framework, make an simple app for school, and now i am make some games with flutter too. i create bunch of png sequence from after effect, glue it into single image and paint it with drawRrect, this future delayed come in handy when display spesific size frame from image, i test it with flutter inspector in real device, some times get 60 fps sometimes not even with bloc state management plugin. struggle with performance problem, still try to learn :)

[@bikkikumarsha]

Clean and crisp slides and diagram.

[@mesharibuhadi1437]

Man you articulated that really well, Thank you so much for a great video!

[@sepddy]

I learned Future so good , thanks

[@palakpatel433]

Loved this video, thank you for explaining things in such a straightforward way.

[@mahmood466]

What a great team behind the flutter, love it ❤

[@anthropicandroid4494]

Good explanation but I wonder about that method supplying a Future to the FutureBuilder; won't that Future be created on every call to build()? The docs recommend creating that future around initState instead

[@jaigohil4963]

Best way to think about async future api!!!

[@idiot7leon]

This is quite similar with promises in ES6, JavaScript. And the async/await is quite similar with async/await in ES7, JavaScript.

[@deepak_mishra]

I don't see a cancel/dispose method in the API docs. What happens if user has moved on to some other task and we don't need the future data we requested? Related to this - if widgets don't cancel long-running futures, and move on to new screens, are we leaking memory? I am from an Android background, and essentially trying to understand if future callbacks hold weak references to the widgets.

[@asoyoyukii3902]

2:45 my face when he said gifts contain errors ...but it's a gift thou...

[@happyday.mjohnson]

Easy to follow explanation. Why wasn't async/await included? I am unclear after watching this video when/whether to use then vs. await....?

[@andrewbrogdon558]

Async/await are covered in the fourth video in this series. It's currently in post-production, but should be released in a week or two!

[@月之轮回2017]

Flutter is Future !

[@Randomdude-i8x]

If I read something from disk, is that handled by a different thread?

[@rahem027]

Is there a better way to nest FutureBuilders? I need 3 different resources for 3 different widgets on the same screen? Something equivalent of MultiProviders would be really great

[@aslamtarakwadiya5012]

Hello, I'm beginner in Flutter. I want call multiple APIs in single screen with Future Builder, So how can I do this.

[@Soultoo]

Is the syntax for the second argument for the delayed method wrong? I can't find it anywhere 5:00

[@starvingdeveloper2987]

Thank you! Very helpful and informative!

[@jagdishshetty4782]

Awesome explanation !!!

[@abou3542]

Thanks for the explanation ! Great job !!!!

[@hamza-325]

What's the difference between catchError and onError callbacks? both are triggered in case of errors, so why are there two of them?

[@ranjanpanda2586]

Can anyone tell me what is the datatype of myFuture at 3:27. final means it can't be changed, but what is the datatype of myFuture ??

[@VladimirMinkin]

The Event Loop described badly, please clarify how it works. If it works like V8 then please add stack call, queue, and tell about external threads for API.

[@ymi_yugy3133]

What would be the most idiomatic way to synchronize Futures. For example I may have to wait on multiple Futures until I can start processing the data.

[@turskyi]

It would be nice of you to show how to handle multiple futures without waiting one another

[@sanghvian]

Brilliant video !

[@sumitrasaksham7715]

Can ( provider + future ) + widget be used in the same way as set state , with the only difference of rendering that widget instead of whole screen?

[@RaymondAtivie]

Great explanation thank you

[@RajileshPanoli]

Your videos are great! But please improve documentations by adding imporant notes so that we can easily find out why that error happens. Now only way to find out the error/ good practice is to checkout the core code using the code editor features. For example TextFormField does not accept any other type values other than strings. I had spent lot of time to figure out that even though it is a small fix.

[@Sam-ch4jh]

Thank you I read a Json file from storage, converted to map and then update into global configuration For me the widget gets updated with old map data while there is a delay in reading file content If I put the reading global configuration inside future.then( ), it does not work and gives some exception I don't want to use bloc pattern for small data Any clue? Also shared preferences does not seem to work

[@juliencasta1968]

merci pour le tuto très bonne information cool :)

[@sodiboo]

is there a dart equivalent to the javascript "resolve" and "reject" methods passed to a promise handler? function getUserInput() { return new Promise(resolve => { setInputEventHandler(data => { resolve(data); }); }); } Because futures in dart seem to just be based on synchronous code that returns a value... but that doesn't really make sense?

[@sodiboo]

I’ve figured it out! A Completer from the dart:async is *exactly* what i want, imo the usage isn’t the most intuitive at first, BUT IT’S THE EXACT THING I WANT! api.dart.dev/stable/1.21.1/dart-async/Completer-class.html

[@MopeyFand]

Lol. This series is a safe space.

[@MrAmG17]

Love these series !

[@dicasgames4927]

Ótima explicação, só que diferente disso eu uso o Connection.state que faz os devidos retornos de acordo com o a resposta.

[@rishidiwute3604]

Loved it !

[@CoderSprint]

Can anybody tell me exactly what coding color theme that was?????????????????????????????????????????

[@pepepriest5973]

Is this like android handler? Well, handler begins when the app starts and not delayed the first time if its a loop

[@sithumdilanga650]

Gift boxes are awesome

[@neilshih]

Thank you ^^

[@flutterdev]

Thanks for watching, Neil! If you enjoyed this, be sure to check out the "Flutter in Focus Playlist" here: goo.gle/FlutterInFocus Happy Fluttering 🙌

[@billy-ps7jz]

hardest part to understand and grasp

[@SivaKumarNitesh]

How's the future status named "uncompleted"?

[@unity3dTutorials1]

Can you make some tutorials which handle Share Extension in iOS? Currently, I want to share some files with my application via Share Extension, but I do not know how to pass data from Share Extension to my app.

[@andrewbrogdon558]

Looks like some folks are working on it: github.com/flutter/flutter/issues/16712

[@shahidwani6445]

Does Future create new thread

[@whoeverofhowevermany]

2:41 I know what you said, but ouch 😂

[@GCoda]

And scopes and closures work like in javascript? String url = ''; http.get(url).then((resp) {print(resp); print(url)} )

[@andrewbrogdon558]

I'm not a JS expert by any means, but you can definitely close over a variable like that when creating a callback for a Future in Dart.

[@ehsanhasin8092]

great, thank you

[@faisalmushtaq2287]

I am getting "Flutter intent redirection " issue as i upload the app on playstore, and they have given me until 21st December 2020 to clear this issue. if not they'll remove my app Please help me

[@hiruthicsha]

This channel could potentially make non coders jump in directly as a mobile application devs❤️❤️. Uhh sorry cross platform 😁

[@classic0ful]

so clear!!!

[@heshansandeepa9471]

very nice

[@a6Brgeuka]

Great! Thank you!

[@BetoMan996]

The async/await feature has been copied from C# and it's so powerful!

[@jajasaria]

I thought it's from JS. Thanks for the info.

[@andrewbrogdon558]

Yep. The concepts behind async/await have been around for a long time, but C# is generally credited with introducing those particular keywords and the way they work. I was a professional C# coder at the time, so I've been able to write with them for a while!

[@prafulgupta7004]

Make a video on HOW TO MANAGE STATE???

[@vasiapatov4544]

kzbin.info/www/bejne/mpDQZpapoteZbas

[@rongsenng]

But seriously though, why we don't have Promise.delayed in JavaScript.

[@venil82]

Because you can implement it yourself wit setTimeout

this thing kinda sucks lol. i'm trying to filter a stream from firestore by userID (i have objects that saved wich user created them) been trying for hours, still nothing my latest attempt child: StreamBuilder( stream: Firestore.instance.collection('properties').where('uid', isEqualTo: getUserId()).snapshots(), ...... getUserId() async { String userId; await _authService.getUserId().then((value) => userId = value); return userId; } does not work

[@ouya6967]

I think catchError and whenComplete are strange. just catch and finally are simple!

[@saadzahem]

but catch and finally are keywords !

[@meetamin7343]

Thanks🙏

[@patricksteffanic5491]

What is the name of the host? I want to follow him on Twitter!

[@TukuStore]

Oke thank you

[@n00bstude]

well done.

[@XiaosChannel]

After watching this video, I learned that there's an alternative way to pronounce json.

[@jorgeguberte7585]

i pronounce it like the name Jason

[@laelluo2976]

感谢字幕制作人员

[@satishkumar-qq8df]

I love flutter

[@gilbertoduran680]

Where is Emily Fortuna??? :(

[@andrewbrogdon558]

She runs our whole channel now, so her influence is everywhere. :)

[@cagrigoktas]

Perfect 👍

[@AnuragSinha7]

Google announced big plans for Dart and was about to replace JS with it but couldn't do it. They dumped it in midway despite being superior than JS. Why they are sticking with Dart now!?

[@muhammadkashif7209]

i love it

[@versatilecontent4244]

I dropped mobile development... I think PWA will terminate mobile development.... it gives you notifications, hardware controller and operates offline... you build it once and it will work all over ... if you don't think so , please tell us why?

[@AnuragSinha7]

PWA can't really replace native apps. Native apps give you a superior experience while PWA is getting better and better but it can't replace native apps. Also all of the apps can't be PWA. However I would love it if native apps can be made irrelevant, windows would be back as mobile OS but this time as WCOS.

[@Alejandro-gg7oz]

what is PWA? its like build apps using html and css? cuz i hate css also css and flexbox is harder than flutter web

[@CrnaInBela]

Am I the only one who thought the gift example was funny AF?

[@simohimo6963]

Future: schrodingers giftbox

[@maxreuv]

How to cancel (interrupt, etc) an uncompleted future?

[@WorstDeveloper]

Why not just name them: then, catch, finally?

[@NISHSHANKACJ]

haaaaa.

[@hsin9659]

nice

[@suranjithnishalaka7395]

🎉

[@Limbustwo]

I think Future API lacks readability.

[@juliencasta1968]

bel homme

[@thaddeusokafor2953]

0 likes? Am I on KZbin?

[@JeVaughnFerguson]

Release videos faster!;

[@MrVitalirapalis]

future dart is a promise in js world