IMPORTANT: ObjectBinding/BindableObject are deprecated now! @ObjectBinding is become @ObservedObject and BindableObject protocol is become ObservableObject as well as willChange become objectWillChange.
If you are learning SwiftUI, you literally NEEEEED to watch this video! This scratched so many cognitive "itches" I had about Swift, it's almost scary. Thank you, thank you, thank you!
Saying that this video is "HELPFUL" would be an understatement. However, I have no bigger words. LOL! In short, THANK YOU DUDE! The way you make things clear, is just something else.👌👌👌👌👌
Much of this video is not appropriate anymore, but the description of what state, binding, etc are is TOTALLY worth watching. I have watched so many videos, but this is the first time I have understood these concepts. Well done Paul!!
I'm used .Net's, old Xaml's and to Qt Qml's (super elegant) property bindings. I was exactly looking for an intro on how SwiftUI does this. You found the perfect level between giving an overview and going into detail. Thanks!
This is an absolutely fantastic explanation for someone like me who doesn't know enough yet to distinguish the significant bits of what the docs are saying. Thank you so much! :D
Been messing around with all three for a few days now, getting things to 'work'! This video really hit the nail on the head and now I truly understand the why. Thanks Paul, you're a legend :)
I've watched a few different videos on @State, @ObjectBinding and @EnvironmentObject and it didn't make that much sense. Your explanation was amazing, clear and high descriptive. Great job :)
This is the best video about this things I have ever watched. You make simple and more complicated examples and you describe them extremely well. Congrats and thanks!
I’ve been an iOS dev for 1 week :) i think you can pull initial startup data out of core data in the scene delegate. Then pass that data into EnvironmentObjects so it can be accessible to all child view from main. Then each sub view can perform CRUD operations on it with core data. This method may not be great if you’re pulling a lot of data into memory. Perhaps there is a better way? Would love to hear!
Great great tutorial... first division university class... core concepts really well explained and introduced vía telling an incremental story... a must watch... Apple should absolutely use this video and upload it to SwiftUI developer library 💪🏻😀😎
Absolutely great stuff. You're making my Swift-learning experience a lot clearer. I'm intrigued about "who taught you?" though. Because I get the feeling you had a good teacher. (This is where you say you're self-taught too)
These videos are soooooo good. Your teaching style is amazing and easy to follow, but not slow enough that I'm skipping around for the info. Clear, concise and concentrated. Superb! Also, you explain the WHY. It's so important, but what so many people miss.
For anyone watching in 2022 ❗❗ @ObjectBinding was renamed to *@ObservedObject* BindableObject was renamed to *ObservableObject* and finally, in the new ObservableObject, didChnage was renamed to *objectWillChange*
Apple should've just let Paul see SwiftUI a week early and link all of their documentation to hackingwithswift.com. That would've saved a lot of developers a lot of time. What an awesome explanation!
You make really great videos, and thank you for that. Regarding this one: My projects have no SceneDelegate, so an update would be highly appreciated. Where and how do you set up the global varible in the .app file?
Can we refactor all the states out of view structs in a single file for example, and still access and control them from all views? That would be so awesome.
Great videos, thank you so much. I'd like to suggest you a subject for the next videos, it would be great to see how to work with CoreData and SwiftUI!
Stumbled upon your tutorials and explanations and it’s amazing. I am currently doing QA work and do some dev work too as I’m learning. However, this is preparing me for the future and I really appreciate your videos and explanations. I still want to transition from QA to dev because it’s more interesting but I know I have a while to go.
These clarity is awesome. Could you please re-visit this again, once GM release happened for iOS 13. As the Combine framework is also in beta, and could have changes before GM release happens in September/October month.
thanks so much for this explanation, it works well to understands the way these annotations works, also if now the Object binding pattern is changed since the video was @published :)
FYI: It looks like the BindableObject code is already broken with beta 4 :( I'm getting an error that "User" doesn't conform to protocol "BindableObject".
Hi Paul, at ~15:15, you mention making sure to call passthroughsubject on the main thread. I searched all over and can't figure out how exactly to do that. Could you clarify via a code snippet on how to write that function on the main thread? Thanks!
Just one question: I can define var isAuthenticated = false, and then create a mutating method, toggleIsAuthenticated() to toggle it -- the compiler is happy with that. But, if I try and pass that into a Button, Button(action:{self.toggleIsAuthenticated()}, label:{Text("Toggle Me!")}), it is not happy -- and gives me the Cannot use mutating member on immutable value: 'self' is immutable error. Why is that?
Watch next: How to fix slow List updates in SwiftUI - ruclips.net/video/h0SgafWwoh8/видео.html
Questions? Comments? Tweet me @twostraws.
IMPORTANT: ObjectBinding/BindableObject are deprecated now! @ObjectBinding is become @ObservedObject and BindableObject protocol is become ObservableObject as well as willChange become objectWillChange.
Simon Bachmann Thank you so much! This indeed saved a lot of trouble...
Was going to ask the same, I started swiftui recently and was confused with seeing ObjectBinding in this video! thanks
I was going to ask when to use ObservableObject and BindableObject, thanks! 😊
Ah that makes sense. Only started learning SwiftUI of late and was confused seeing those. Thanks for clearing up.
thank you 👌
If you are learning SwiftUI, you literally NEEEEED to watch this video! This scratched so many cognitive "itches" I had about Swift, it's almost scary. Thank you, thank you, thank you!
Saying that this video is "HELPFUL" would be an understatement. However, I have no bigger words. LOL! In short, THANK YOU DUDE! The way you make things clear, is just something else.👌👌👌👌👌
I have saved 1 hour while watching you 20 minutes concrete and robust explanatory video. Thank you Paul.
Much of this video is not appropriate anymore, but the description of what state, binding, etc are is TOTALLY worth watching. I have watched so many videos, but this is the first time I have understood these concepts. Well done Paul!!
I’m just getting started. What would you recommend is the perfect video right now for this information? Thank you very much.
I'm used .Net's, old Xaml's and to Qt Qml's (super elegant) property bindings. I was exactly looking for an intro on how SwiftUI does this. You found the perfect level between giving an overview and going into detail. Thanks!
Best no bs intro (experienced programmer here)
Been stuck on these concepts for days, this video really help improve my understanding!
Please make more! I love the way you talk with passion and interest! Also the way you edit the videos with a final touch! Awesome job!!!
This is an absolutely fantastic explanation for someone like me who doesn't know enough yet to distinguish the significant bits of what the docs are saying. Thank you so much! :D
Been messing around with all three for a few days now, getting things to 'work'! This video really hit the nail on the head and now I truly understand the why. Thanks Paul, you're a legend :)
This is THE best tutorial I've seen so far! And boy I've seen many.
Thanks Paul!
I've watched a few different videos on @State, @ObjectBinding and @EnvironmentObject and it didn't make that much sense. Your explanation was amazing, clear and high descriptive. Great job :)
Amazing video, teaches us core concept in a very good way. BUT The Victor Hugo reference nailed it!!!
This is the best video about this things I have ever watched. You make simple and more complicated examples and you describe them extremely well. Congrats and thanks!
Your clarity is awesome. Can you do one that uses Core Data?
maybe he already did one go check : )
Core Data with SwiftUI
@@rickstrickland2464 oh now i get it : )
I wasn't able to make it work too, got to figure a good way to make managed objects conform to bindableObject
I’ve been an iOS dev for 1 week :) i think you can pull initial startup data out of core data in the scene delegate. Then pass that data into EnvironmentObjects so it can be accessible to all child view from main. Then each sub view can perform CRUD operations on it with core data. This method may not be great if you’re pulling a lot of data into memory. Perhaps there is a better way? Would love to hear!
Every time I watch your videos it gives me a deeper understanding of the topic explained. Thank you so much!
Nest video for a guy who comes from java and python. Thanks!
Great great tutorial... first division university class... core concepts really well explained and introduced vía telling an incremental story... a must watch... Apple should absolutely use this video and upload it to SwiftUI developer library
💪🏻😀😎
Finally my company decided to start the next project using SwiftUI on iOS 13 and here I am, BOOOM :)
Absolutely great stuff. You're making my Swift-learning experience a lot clearer.
I'm intrigued about "who taught you?" though.
Because I get the feeling you had a good teacher.
(This is where you say you're self-taught too)
Paul, we generally keep state as a completely different place to the UI components themselves, this provides a layer between state/transport and UI.
Wow! Best SwiftUI video in the whole RUclips! Thank you!
Oh my goodness. This @EnvironmentObject thing might just save my life. Thank you thank you!
Being an iOS & React developer feels great with SwiftUI. :)
These videos are soooooo good. Your teaching style is amazing and easy to follow, but not slow enough that I'm skipping around for the info. Clear, concise and concentrated. Superb! Also, you explain the WHY. It's so important, but what so many people miss.
For anyone watching in 2022 ❗❗
@ObjectBinding was renamed to *@ObservedObject*
BindableObject was renamed to *ObservableObject*
and finally, in the new ObservableObject, didChnage was renamed to *objectWillChange*
thx
This should be pinned!
"please just stop and thnik for one moment how amazing that is" is the one possible definition when it comes to swiftui.
Just learning Swift.. this was really helpful. And I caught your bread and 24601 reference… Cheers for that one!!! 🥃
I think this is the best tutorial video you’ve ever made.
Great video @twostraws very well explained and delivered! Time to write some SwiftUI...
Your content is gold. Thanks Paul!
Excellent! All gaps flled. Thank you. 👍🏻
Apple should've just let Paul see SwiftUI a week early and link all of their documentation to hackingwithswift.com. That would've saved a lot of developers a lot of time. What an awesome explanation!
Excellent tutorial, I finally understand these concepts after trying a few other sources. Thanks Paul!
You explain very easily even without the help of your two
dogs :) You are the best ! Hope you continue to make many more videos!
Much needed explanation!! Thanks Paul
5:46 beautiful example on how @State keyword works
Great explanation, love your professional tutorial
You're a great teacher, easy to understand.
Now this now a year later, it's so clear. Thanks
Great explanation, been trying to grasp this concept for a loooooong time, its finally coming together. Thank you
You make really great videos, and thank you for that. Regarding this one: My projects have no SceneDelegate, so an update would be highly appreciated. Where and how do you set up the global varible in the .app file?
Can we refactor all the states out of view structs in a single file for example, and still access and control them from all views?
That would be so awesome.
Paul you are smashing it again!!! Great breakdown of new tools!!!
Great videos, thank you so much. I'd like to suggest you a subject for the next videos, it would be great to see how to work with CoreData and SwiftUI!
Love all your tutorials. Would be great to have in depth tutorials on Combine framework as well.
I've learned a lot from this. Thank you!
This is the best explanation so far! However, I do hope you can add in explanation of @Binding besides these 3.
Hi Paul. Thank you for this awesome video. Excellent tutorial. Your explanation is accurate, concise, and clear. Congrats!
You are really brilliant smart.... What a wonderful explain!? Thank you sooooo much!
Should be required viewing to get your SwiftUI badge.
Thank you very much! This was the first time I really understood what was going on...
Thanks Paul - great visuals for the video along with your clear instruction.
+1 for the request for a basic Swifty I app that uses core data.
What a clear explanation! Thanks! Also understandable for a beginner like me :-)
Stumbled upon your tutorials and explanations and it’s amazing. I am currently doing QA work and do some dev work too as I’m learning. However, this is preparing me for the future and I really appreciate your videos and explanations. I still want to transition from QA to dev because it’s more interesting but I know I have a while to go.
Best tutorial for the states. Loved it
This is well described and very helpful video indeed. Keep the good work up,,, you are doing a commendable job for the community.
Thank you so much for this video. You have amazing good teaching skills!
These clarity is awesome. Could you please re-visit this again, once GM release happened for iOS 13. As the Combine framework is also in beta, and could have changes before GM release happens in September/October month.
Loved it! Clear tutorial.
Everything clearly explained. Just one doubt, how can I use 2 user objects(like user1 and user2) from Environment?
3:59 is my favourite part of the the video 🤯
Excellent tutorial! Thanks!
Question please?
After using ObjectBinding on the User class.
How do we access it from different views with recreating a new instance?
BEST EXPLANATIONS !! BIG UP!!!
The Textfield mentioned in the video doesn't work anymore. The new API is now something like that: TextField("placeholder text", text: $myInput)
U r superb explaining ❤
Here's a really interesting problem, how do you do object binding of type int/double with textfield??
Ananta Shahane wouldn’t you just use state?
I love SwiftUI n I love this Tutorial too. This is awesome.
Great explanation! Thank you
Excellent. Thank you so much ☺️☺️👍
Thank you so much, your explanation of these concepts is very clear
Awesome video Paul
Hi Paul, thank you for the tutorials you are making. Helps me alot.
thanks so much for this explanation, it works well to understands the way these annotations works, also if now the Object binding pattern is changed since the video was @published :)
So what's @Binding used for?
Thanks for the great explanation, Paul! Now most of the magic behind SwiftUI is much clearer for me :-)
Great explanation. Thanks.
Awesome video, super concise!
Very cool! Much simpler than managing state in android.
Didn't think I'd find a Les Mis reference in a video about how to pass around updated data in an app.
This is Great! Thank you Paul
Your videos are awesome man.
FYI: It looks like the BindableObject code is already broken with beta 4 :( I'm getting an error that "User" doesn't conform to protocol "BindableObject".
use ObservableObject instead and when u are creating a variable out of it use ObserevedObject for it.
Awsome Teacher.. thank you for your great lecture
Thank you for this tutorial!
Another great video - thank you.
How can i update “View, Text” when got data response from server.
This is priceless. Thank you
Would a "@StateObject" be enought for the Class, without using Combine?
Very good explanation, learnt a lot 👍
Hi Paul, at ~15:15, you mention making sure to call passthroughsubject on the main thread. I searched all over and can't figure out how exactly to do that. Could you clarify via a code snippet on how to write that function on the main thread? Thanks!
Very well explained. Can you please also tell how to get height/width and other properties of any view? I tried, but, couldn't find any.
Excellent explanation!
Xcode 11 beta 7, get errors at the 10:25 mark.. Cannot invoke initializer for type 'TextField' with an argument list of type '(Binding)'
What do we do at 18:40 now that Scene Delegates are not produced in new default SwiftUi files?
Just one question: I can define var isAuthenticated = false, and then create a mutating method, toggleIsAuthenticated() to toggle it -- the compiler is happy with that. But, if I try and pass that into a Button, Button(action:{self.toggleIsAuthenticated()}, label:{Text("Toggle Me!")}), it is not happy -- and gives me the Cannot use mutating member on immutable value: 'self' is immutable error. Why is that?
Is there any reason why so few tutorials mention @Binding?