#2 - BLoC Core Concepts - Streams, Blocs, Cubits | BLoC - from Zero to Hero

Hi there! Today we'll take a look at the most important concepts of BLoC = Streams, Blocs and Cubits.
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[@Flutterly]

Hello, everyone! The entire course is now live on Udemy too, get it while it's hot --> www.udemy.com/course/bloc-from-zero-to-hero/?referralCode=E689592633984B34DBEF Also I have just managed to finally finish the entire BLoC - From Zero to Hero Complete Course, based on this tutorial series. You can check it out here -> kzbin.info/www/bejne/inmmnJ6HYrtkY5o

[@user-jg2kz8vv6o]

The best of the best!!! Hours of courses were beaten by 14 minutes video! Great! Thank you!

[@Flutterly]

That's the best compliment my video could ever receive, I'm really glad it helped you!

[@dilshan3372]

--------------BLoC core concepts----------------- 0:37 - 4:22 - Introduction to Streams. 4:22 - 4:51 - Why BLoC needs Streams. 5:11 - 10:30 - What is BLoC and Cubit , And what's the difference between them. 10:30 - 14:00 - Which should I use ,BLoC or Cubit ? Topics that I learned from this video. Thank you so much for your explanation.

[@Flutterly]

Thank you so much! ✨ Let me pin this message

[@stephenchoo8990]

You are litterally the bset. The best lecture ever about BLoc.

[@tevinmorake8924]

Definitely Subbed! After a couple of courses, medium articles, stackoverflows, and brain-cracking, I can finally picture application-wide state thanks to this explanation of bloc and cubit! Thank you

[@Flutterly]

Thank you so much, glad you like my content!

[@milleradulu]

Thanks @Flutterly for such an elaborate discussion on the basic concepts. For a long time I didn't really understand the events, mape event to state e.t.c, and now I feel like, "How did I not know this!!". Good good stuff.

[@Flutterly]

Thank you so much, man, I really appreciate it! ♥

[@puspharajselvaraj8852]

Bloc vs Cubit nicely explained in very details.

[@Flutterly]

Thank you so much!

[@raul286162]

Man you really go yo the main point the most complete explanation I had seen very straighforward and fast.

[@Flutterly]

Thank you so much for your feedback!

[@amitmondal7427]

This explanation about stream is super easy to understand. Thank you.

[@rounaktadvi4950]

I wasn't able to understand cubit, thanks to you now I know what it actually is and when to use it btw great example of that bulldozer and shovel😂

[@Flutterly]

😂 😂 😂 Haha, I appreciate it!

[@KenWhipday]

Best explanation I've seen of bloc - and I've been watching lots of videos :-)

[@Flutterly]

Thank you so much! Stay tuned, there are more to come!

[@ysapaa9173]

Amazing explanation, really. Can't wait to see full series. Thanks man!

[@Flutterly]

Thank you so much, man! ✨ Looking forward to providing more material

[@OCTsecond]

Thank a lot for your videos, very clear explanation and good visual context !

[@Flutterly]

Thank you so much!

[@rno2054]

Thank you , you just answered my problem that i have over a weak .. now i can solve my code

[@akashdalvi9000]

The effort you put in is just incredible. Hats off mate

[@Flutterly]

Thank you so much, mate! 🌟 Indeed, it takes a lot of time and it's a little bit of a learning curve, but I hope I can become better by every tutorial. Thank you again!

[@user-lz5wf1sn3e]

You have a talent. Hope you will be on top of all flutter videos

[@Flutterly]

Thank you so much! ✨ Hopefully I will

[@nativeworld0]

watching on 2020 you are best teacher clear to the point hats off master!!

[@jesuscortes6162]

Finally got the concept after watching this video! Thank you !

[@sibulelemboyi526]

No man, you tutorials are amazing ❤

[@joseubaldocarvajal6472]

Absolutely amazing. A new subscriber here. I would definitely buy your courses. What an awesome way to teach and clarity concepts!. Thanks a lot.

[@Flutterly]

Thank you so much, fortunately, all my courses will be free so that everyone will be able to access them! 🌟 Anyone who wants to support can donate to me either way, don't need to charge them for the content

[@loop8836]

best video, best way of explaining, best use of animation. wish you 100k quickly

[@Flutterly]

Thank you, brother, God bless u!

[@leelaitw]

12:54, clear explanation, Thank you.

[@Flutterly]

You're welcome!

[@tridarid]

Easy to understand. Thumbs up for you.

[@Flutterly]

Glad I could help, thanks!

[@spalsh1221]

Really nice work. One of the best explanation on this subject. Thank you ! 😁

[@TechWithDnes]

You are the best. What an explanation

[@Flutterly]

Lots of love, homie! ♥ Glad I could help!

[@soumyaranjanmishra1357]

You are best tutor man

[@kanyshaiosmonova2008]

thank you! Now I really understand it

[@bizarrecentral6032]

Really great video. Thank you 🙏

[@ribeshbasnet2718]

This is what I needed Thank you sir.

[@Flutterly]

You are welcome! Glad I could help!

[@alexlibak]

Best explanation ever for blocs and cubits! I think official flutter team should add your video to their page of explanation. Did you thought about writing post about Blocs on medium.com?

[@Flutterly]

Thank you so much! Flutter team doesn't really like the bloc pattern so I don't see a reason why they should add my videos to their page of explanation haha. No, I only plan on uploading videos here, and leave them as explanatory as possible. I don't have time to upload and write articles on more platforms.

[@Shakl-e]

@@Flutterly Do they suggest provider with change notifiers? What it the architecture in that case? UI - Provider - Repository - Data client?

[@xbriannx]

Absolutely the best explanation of all Bloc tutorials on the internet! P.S.: If I understand well the lesson, StatefulWidgets are obsolete when using Bloc even for the simplest use cases. Is my understanding correct?)

[@Flutterly]

No, it's not like that. Stateful widgets are useful for other stuff like animations, disposing manually created blocs, work with native code and many more. You'll see what I mean while you'll advance deep into the tutorials. 👍

[@user-dj2vx6nb5h]

Thank you so much. Your teaching method is really great 🔥😍

[@abbosbobomurodov5011]

Thanks bro from Central Asia

[@Flutterly]

You're welcome, bro!

[@khaledElsa3dny]

your explanation impressed me ! Thanks alot ❤

[@andreaaschei6000]

Wow, really good, thank you!

[@leanghenglim]

Loving the visualisation, keep it up

[@user-er9zk4sr9r]

Lol ooi

[@himanshudhakecha1789]

very helpful to understand the concept

[@hamada_emam]

جامد يا جدعان

[@nick0c]

Thanks very much for this!

[@Flutterly]

You're welcome!

[@BigDoubleJoe]

very good explanation

[@Flutterly]

Thank you!

[@earthrelated]

Excellent!Keep going bro!

[@jose99Av]

thank you, your videos are so helpful

[@iotmindsecommerce9171]

Thanks for the great tutorial on flutter bloc. Will you please create a video on Bloc transformEvents.

[@emil.mammadov]

You rock broo. Thanks for all explanation!!

[@fidamuntaseer1989]

Good explanation!

[@Flutterly]

Glad it was helpful!

[@WimpyWarlord]

What a fucking legend.

[@tomaszsawicki3206]

Wow nice work done here sir. Kudos :D.

[@Flutterly]

Thank you so much! ✨

[@joseinTokyo]

brilliant!!!

[@humayunkabir54347]

i see your video in udemy ...i have a question sir..your video is 3 years ago.. have any change right now in bloc??

[@dayworkhard]

Best!

[@vipulkumar8261]

I'm not getting the same output for code discussed at 4:10 the boat problem

[@kawsarmoqadsa5990]

Hello, great video but i had a little problem. bloc.listen(print); the listen method is not found error is given for both cubit example and bloc example. please, help.

[@petromoskal787]

Hi! I'm getting distracted at 6th minute) what is the animated widget for the counter button?

[@muhammadyaumil1212]

does yield same as return in Stream func ?

[@siyabongamashilwane7432]

i love you bro thanks man ur the best.

[@josephjoey3904]

Please help me. I'm stuck on login system with rest API and register isn't working. Can you make a video? Thanks 😊👍

[@poyrazaktas6374]

It was a great explanation. In 4:12 you've mentioned that the receiver listens to data. But I didn't understand how the receiver knows that the sender sent its all data. Can you help me out, please?

[@Flutterly]

This is just the foundation of streams mate, the receiver is just waiting at the end of the pipe for new piece of information

[@Shakl-e]

It does not know and will be waiting until you close the stream

[@khairulanas]

you are awesome .... >.

[@Flutterly]

Thank you, man!

[@dirverslicense]

The three people that disliked this video , have youtube channels that tried to teach this concept and failed.

[@Flutterly]

Haha, let them go, man, I would appreciate if they would provide a feedback too, rather than just hitting the dislike button. 😂

[@keithbacalso9433]

Hi Flutterly, do you also cover RxDart in BLoC?

[@Flutterly]

I will cover RxDart in my Dart series, soon enough!

[@Bathusaix]

this video does not have subtitles?

[@imankamali5799]

Some details are not covered (for beginners) But overall it is great

[@Flutterly]

Thank you for the feedback!

[@kuldeepgupta2536]

please make full flutter course

[@imran809]

You should slow down when you are modifying previous code. This helps focusing on what is changing. Otherwise, type it from the beginning please.

[@quicksketch1617]

Where is coming from this print? final streamSubscription = cubit.listen( print);

[@SamiUllah-tw6rq]

really good explanation ! i've started watching your playlist is it complete ?

[@Flutterly]

I still have 2 videos to go, Mate.

[@quicksketch1617]

Need to import dart async to use stream?

[@Flutterly]

Yes

[@PGd_108]

sorry subtitles are disabled

[@sribagy]

What editor are you using to type the code, looks like a local version of dartpad?

[@0x3C]

Looks like VS Code

[@Flutterly]

Yup, it's vscode

[@robovirtuoso1354]

Instead of "why is there a Cubit", personally my question is "why is there BLoC, isn't Cubit enough?" Seriously, what can BLoC do that Cubit can't, apart from the added complexity of event stream? I mean, functions can also be debounced/throttled like a stream.

[@Nicosfrs]

As a not native english speaker, not having subtitles hurt my soul :(

[@imankamali5799]

Is everyone like me and does not understand that in the end it is better to use a bloc or qubit to update and delete the customer ?!😑🙄 Or is my IQ too low ?!😅

[@jovanemullings]

what is the difference between yield and return ?

[@Flutterly]

Yield is used to send a value down an asynchronous stream of data. Return is used to return a value immediately from somewhere.

[@jkoteswararao007]

Once return is used, it gets closed. But in yield it not only sends the data to the caller, but also waits to send more data as it is supposed to receive later, (example stream). Use return when you want to send the data to caller and you will no longer need to send more data later. But yield it not only sends data immediately , but also sends the data in later(ex:future). caller can get data continously without calling each time .

[@shaaficialli4284]

please make a lot of tutorial in bloc

[@kulveersinghdhanoa]

What software did you use to make the diagrams?

[@Flutterly]

Videoscribe

[@kulveersinghdhanoa]

@@Flutterly -Thanks - looks like a great tool.

[@rabbyglaigboussagamouana3785]

Please, can you add subtitles

[@Rick-ng3lr]

Lol, literally a stream/river. 🤭👍🏻

[@Minhle-bg1rp]

Please enable auto sub in this video. Im listening very bad. Thanks you for sharing courses.