One of the best teachers ! Knowledgable and great speaker.

You are simply unbelievable. The amount of knowledge you give to developers is unmeasurable. Thanks a lot Mr. Hudson ♥️

1. Adding views and modifiers where they aren’t needed - 1:48 2. Using @ObservedObject when you mean @StateObject - 4:05 3. Putting modifiers in the wrong order - 6:38 4. Attaching property observers to property wrappers - 12:28 5. Stroking shapes when you should stroke borders - 16:19 6. Using alerts and sheets with optionals - 19:18 7. Trying to get “behind” your SwiftUI views - 22:36 8. Creating dynamic views using invalid ranges - 25:03

It’s really clear your main focus is teaching the community and it’s why you are an invaluable asset to any aspiring SwiftUI developer. You provide time stamps and a quick summary at the beginning easing the bug fixing process for all of us. Thank you so much, Paul, many thanks, from Oxford.

This video was awesome, Paul! Please do more of them.

Incredibly informative and well paced. Thanks!

Amazingly clear, well-thought and useful video! Thank you soo much 🙏

Paul, I will be forever grateful to you for the amount of knowledge you share and for being such a great teacher.

I am a long time programmer that keeps coming back to your excellent videos. Good job!

Amazing video! It cleared the air with all the confusions. Thank you so very much!

This is by far the best explanation I’ve come across for @State. I’m very much a beginner to coding in general and began working with SwiftUI late last year until I got frustrated back in February and gave up on it. I picked back up with it in April and understanding that @state means the view owns the data makes that property wrapper so much clearer.

Thanks for this. As a dev since the 80's, I must say SwiftUI has been one of the trickiest languages I've tried to learn. While crazy powerful, there's so much you need to know up front to make it work. You do a great job explaining things!

Excellent examples and best videos for study. TYVM, you do great lessons for us!

Excellent video. This is exactly what is needed after one learns the basics and has tried writing some apps. Thank you.

Dear Paul Hudson, I really appreciate your dedication and would like to thank you for your contribution

Simply great - thanks, Paul!

That .alert was amazing option that I didn't know that! Thanks Paul

Very very useful, made our perception of how they all work much better 👍🏻

This channel and the website have been pivotal in my app development 🙌 thanks for the exceptional content.

You’re back!

Fabulous. Excellent content, clear and presented well. Thank you

Last week i started with SwiftUI and i feel that is the best decision in a time. I have five partners to teach everything this in the future. Thanks!

This is how I know he's a great teacher. After he explains stuff, I always go "Of course, obviously."

Well that clears up loads of stuff for me Paul - thank you!

This video and the idea behind it is great. would love to see more video like this. common / uncommon issues and what is the best way to handle them, for SwiftUI and Combine.

Very handy. Thanks Paul!

Very useful video, it will definitely save my debugging time around the codes 😃👍

Great work! Probably the best Teacher of swiftUi

Thanks for the video, Paul.

Great video, as usual :-) Thanks for the good advices! I hope, I can remember when I run into these problems :-)

Learnt a couple things. Thanks, man!

extremely helpful. finally just found 2 errors in my code with your video. thanks a lot!

Thanks Paul great video.

This tips will make me remove so much useless repetitive code. Thanks so much!

Awesome Content, Thanks Paul

I learnt a lot, thank you!

Cheers, Paul. Hopefully you'll do more content like this :D

It’s a great day whenever a new Hacking with Swift video comes out! Each one gets me a little closer to wrapping my head around iOS development 🤯

Thank you Paul!

Very helpful! Thanks!

Pufff so much value! Thanks Paul, I was making a mistake on the second one 🤓

I love the idea of this video... Reminds me of Pareto 20/80 rule... So, for instance 80% of the problems come from 20% of your mistakes. Identifying those and removing them then leads to disproportionate gains... Very cool frame from which to improve the code, that I haven't seen anywhere else yet. Thanks for sharing

Brilliant as always

You are back on UKposts. Great

Great video, deep explaining. Thanks a million. I've been working my mind around something and have asked about it all over the place with no easy answer so far. I need to build a Text from an array of texts where each time a word is emphasised and should have an image right after, a clickable image that would bring up a meaning on the screen or so. Problem is you cannot concatenate text with a button, or can you? I don't know if you have the time to answer me, but thanks any way for your great videos.

amazing as always

yes modifiers in the wrong order is annoying I wish they add a visual error or something for it. Thank you Paul

Totally awesome! Thanks

extremely helpful

great video! There is one thing I wanted to ask! I got the case where I got a SF Symbol and I attach a continuous animation to it like: Animation.linear(duration: speed).repeatForever(autoreverses: false) I get new speed values from my model in the view, but the animation is only changing if I restart the app. It does not update even I print the value of speed and indeed it does change, the animation keeps the original value of speed throughout. What I am doing wrong conceptually here I wonder?

This video was awesome.

Awesome content, thanks 2straws. For the second common mistake, what do you do if you're developing SwiftUI with an iOS13 requirement?

Really cool, I almost finished a project written using SwiftUI, but still there is something new)

Thanks great video

thanks for explain @ObservedObject, and @StateObject, I would use it the other way round or get confused on which one. Maybe you can show next time how different the two function, so people get an detail view of what does what.

Great video. I think I made all the 8 mistakes loll. Thank you so much.

Paul, can you please make a video explaining the difference between components and views? I never know when to separate that in my projects. It ends becoming a huge view, full of modifiers.

Thanks Paul, you nailed it again, common error number 1 I did a lot with RoundedRectangle, where I only need a color. But one annotation: I think combining PropertyWrappers (like @Published) with Property Observers (like didSet ...) works fine since Xcode 12. Do you disagree?

Awesome!

You are helping me a log with hackingwithswift, thank you. I'm still a little frustating with SwiftUI, hope that pass very soon with more learning.

Hi Paul! I have a question for you that " Can we add modifiers for Image in tabItem in SwiftUI?"

Not understanding the state view was the biggest difficulty when first learning. Noting that regular variables could change, but by themselves, nothing visually would occur. Make sense of course now as you don't want to tax the system unless a state is changed, but when new to swift you learn things like that. For example, why doesn't the button's new set variable not show up in the text field... well you didn't change the view. Do you have any tutorials on sound events in 14, I have been working with sound clips in my apps, but I feel like the way I am doing it is probably using too many resources and makes the app sluggish. Also trying to mix sounds instead of stopping one before starting the next seems tricky.

Great! Thanks! =) What about the problem of a huge EnvironmentObject (many Published vars)? Also, what about navigation in complex project, when some screens could lead to several other screens & there are several UI flows in UX? What about design architectures: MVVM, MVI? What about Coordinator pattern for SwiftUI project with custom NavigationStack & container views (when we just switching some state & in switch block dynamically choosing which view to show)? =))))

Around 21:40 you show how to display an alert using `.alert` and the `item` argument instead of `isPresenting`. But that also uses the `Alert` view which is now deprecated. What is the new way to display and alert based on a binding to an optional value instead of a binding to a boolean?

Hi Paul. I'm stuck with one question. Can you help me? "isEqual"method and operator "===" identical? Which one to use is a matter of taste or are there nuances?

Thanks

Really nice what mac do you have to get these quick live views i always have to wait several seconds.

Woah, I wanna cry. Thank you thank you for explaining @State and @Observed objects . I couldn’t understand why my fetchDat() networking request request and updates again and again every time I came back from navigation view. I was thinking that it’s because of I’m calling networking request in .onAppear()

This may be a stupid question, but since Swift is open source is there a way to see the code for .font and see the details @paulhudson is talking about?

that thing where every new view modifier wraps view into another view - doesn’t it have negative impact on performance with more complex UIs ? I’m currenrly thinkimg about approach for complex app which does a lot realtime audio processing (which is done in separate resltime audio thread using mostly plain C code thriugh ObjectiveC wrapper) - i am a bit afraid SwiftUI will have bad impact on performance… is SwiftUI viable to use also for more CPU extensive apps ??

Using @ObservedObject when you mean @StateObject - @ is a good catch

Please provide tuorial about cognito ios authentication

Apple should hire you as the the CTO’s CTO.

But what to use instead of StateObject in iOS 13 where there wasn’t It and only ObservedObject. ObservedObject seems to be useless for me now

So in the case of something like id: \.self; what exactly is the backslash doing? Never quite got that. It's always just been one of those mystical tokens. - I mean, I guess it relates to what the bound of the following .self is, because it's not the encapsulating ContentView struct, but thee aforementioned values in the list, but in like a general abstract sense, what is the \, does it belong just to SwitftUI or is there a general Swift concept that it comes from? Cheers

Can you please do a video about how you came up with that binding code and explain the syntax as it’s confusing as hell. Swift is NOT easy to read or understand.

Hello, Paul, thanks a lot! Without you, I would be entirely lost. As always, everything just in time ;-) Still just wondering about this strange screen position (@11:17) of x: 150, y: 150…, I would have expected the x-position to be much more far off… Is it, because it takes the middle of the "Hello, World!" string as the position? See you ;-)

opt+cmd+[ or ] to move a line in Xcode 😉

This is brilliant, but what I really need to know is what the keyboard shortcut is to restart the canvas preview! Anyone?

what if you are targetting iOS 13 and don't have access to @StateObject?

27:33 Line 16 , why have not self , you can run code ? I can't run code like you if have not self.:(

23:43 yes you guess right 😅😅🤭

👍Have some Exta like🙂

This is beautiful, but your idea of "cross platform" is somehow distorted :D

First