Відео

Are the names from Fruit basket? =D

What is the empty () brackets for in Array<String>()?

I am getting the error ”Expressions are not allowed at the top level”

Very well explained. However, this appears to only detect a "known iBeacon" Is there a way to detect unknown nearby iBeacons?

Does anybody know how it works with static properties of class? I have static property of @Observable class - gameIsActive (Bool) and would like to change states of different views depending of this common property. But I didn’t find how to do that.

What if we want to combine filters?

I find the solve finally it is : import SwiftUI import SwiftData @main struct MyApp: App { var body: some Scene { WindowGroup { ContentView() .modelContainer(for: Book.self) } } } . Just you should pot the .model……_ In windowgrop

I'm over here struggling to implement Newton's approximation for square roots from memory with caveman level Swift skills trying to get doubles to converge to the square root. Finally conceded and watched the "hints". Next time you might want to mention we're only looking for the solutions to perfect squares for the thick skulled amongst us.

Note: if you print out a date, it will return the raw UTC version, contrary to displaying it in a SwiftUI View. And that can be confusing, especially if you only set hour = 8, minute = 0 as in this example. For me in Europe/Amsterdam timezone, the printed value was 0001-01-01 07:42:30 +0000 where I would have expected 0001-01-01 06:00:00 +0000 (taking into account the timezone) Probably because of all the changes to the calendar in the last couple of centuries? :)

Reminder to come September 4th 2024

Great video! do you or could you make a video on how to use the documentation ? I find it hard to what are all the options that can be passed into a functions or method. For example Lets say I create a button and add .Frame and .Padding. I could I find where all the other options are in the documentation. Not just for the button but for others as well.

I tried to call the result like this: let person = Person() ------------------------> This line printed "John Doe is alive!" person.printGreeting() ----------------------> And this line printed "Hello, I'm John Doe" But I couldn't get the 'deinit' result While when using for _ in 1...3 { let person = Person() person.printGreeting() } when using it, I got all three lines: init() and func and deinit I don't understand why do we have to use 'for _ in' to get the full result! can anyone help me to understand this?

Crystal clear! Thanks!

struct Car { // Properties let model: String // Constant since the model of the car won't change let numberOfSeats: Int // Constant since the number of seats is fixed private(set) var currentGear: Int // Variable as the gear changes, but only changeable within the struct // Initializer init(model: String, numberOfSeats: Int, initialGear: Int) { self.model = model self.numberOfSeats = numberOfSeats self.currentGear = initialGear } // Method to change gears up mutating func gearUp() { if currentGear < 10 { currentGear += 1 } else { print("Already in the highest gear.") } } // Method to change gears down mutating func gearDown() { if currentGear > 1 { currentGear -= 1 } else { print("Already in the lowest gear.") } } } // Example usage: var myCar = Car(model: "Tesla Model 3", numberOfSeats: 5, initialGear: 1) myCar.gearUp() // Increases gear by 1 print(myCar.currentGear) // Should print 2 myCar.gearDown() // Decreases gear by 1 print(myCar.currentGear) // Should print 1

Very cool to see. 😊

Brother I had to add an if statement on mine😂

Thanks for the energetic teaching, it proofs what you can do with little code. Do you have some pointers how to include a map and tag a photo with location on the map. The idea is to create an app that allows someone to take a photo of a lost subject, and position that on the map so someone who lost it can visit and collect it. Around a school you find in wintertime a lot of winter cloves, would be nice to make parents happy to reunite their pair of cloves 😎

offset is kind of like the anchor point in after effects

Hello Paul and thank you very much for these videos. I am a novice programmer wannabe and am trying to learn Swift through following your videos. I completed the code for the first tutorial but I am getting nothing back from the API call, just a blank screen. I get the following message: "Communication with Apple failed. Your team has no devices from which to generate a provisioning profile. ..." I am working on a current MacOS machine and the app large is iPhone 15 Pro. Do I need to do something with the App Sandbox under "Capabilities"? When I look under "Capabilities" I do not see the option to add App Sandbox

Cool) can you help me do the same with iOS 15?)

Paul thank u so much I've been wondering how to do these crazy effects and u did show that it can be not that hard thanks! Gonna dig in Inferno etc. Btw these dogs are adorable 2 treats were not enough lol :D

my solution: * * * * * * import Cocoa enum ErrorSquareRoot: Error { case outOfBounds, noRoot } func findSquareRootOf(_ number: Int) throws { if number < 1 || number > 10000 { throw ErrorSquareRoot.outOfBounds } for i in 1...100 { if i * i == number { print("The Square root of \(number) is \(i)") return } } throw ErrorSquareRoot.noRoot } let number = 10 do { try findSquareRootOf(number) } catch ErrorSquareRoot.outOfBounds{ print("out of bounds") } catch ErrorSquareRoot.noRoot { print("no root") }

Thank you for all this work. Just got through the first part and made it here. It didn't fall into place right away but i'm new to programming languages. I'm happy to say I was able to make it happen without looking for an answer first.

You never showed how to automatically move to a new view.

Paul, It is months later but I want to let you know that I found this tutorial VERY clear and consequently VERY helpful. I had watched other tutorials and none were as clear as this one. A BIG thank you!!!

Nice. I hope the latest CSS APIs are in use. These APIs are removing some of the dependency on JS.

Would have preferred a simpler example.

Wow!

SwiftUI is the worst UI Framework I ever worked with lol.

day 87 going strong!

my solution: let luckyNumbers = [7, 4, 25, 49, 22, 33, 2, 9, 1, 17] let filerEven = luckyNumbers.filter{ $0 % 2 == 0} print(filerEven) let ascendingOrder = luckyNumbers.sorted{ return $1 > $0 } print(ascendingOrder) let luckyAnnouncement = luckyNumbers.map{ return "\($0) is the lucky number" } for i in luckyAnnouncement{ print(i) }

at 1:19 , how can you do that? is there a short-cut?

fellas this is my solution, let me know what you think //checkpoint 4 enum sqrtCheckError: Error{ case lessGreater, noRoot } var squaresArray: [Int] = [] for i in 1...100{ var iSqrt = i * i squaresArray.append(iSqrt) } print(squaresArray) func sqrtCheckFunction(_ number: Int) throws -> String{ for i in 1...100{ var iSqrt = i * i squaresArray.append(iSqrt) } if number > 10000 || number < 1{ throw sqrtCheckError.lessGreater } if !squaresArray.contains(number){ return "no root" }else{ return "root: \(number) is \(sqrt(Double(number)))" } } var num = 27; do{ let result = try sqrtCheckFunction(num) print("\(result)") }catch sqrtCheckError.lessGreater{ print("num is out of the bounds") }catch{ print("error") } i used sqrt() because i was out of idea

What does the form actually do from a functionality perspective though? Do toggles etc not work unless they’re in a form? This seems like an important detail.

Thanks for the great tutorial series! One issue I found with this step is that when the QR code is saved to the image library, it's saved in a very low/blurry resolution. I tried setting .interpolation(.none) on the image passed to ShareLink but it did not seem to fix the problem. Do you have any suggestions to resolve this?

I've always been confused by how protocols work. The way you've explained it like I was 5 was perfect! It's literally just a bare requirement for structs, and it allows for custom types for richer inference. Thank you!

Amazing! Thanks

Paul, you're the best!

I am new with SwiftUI and just ran into this problem this week. Unfortunately, @Observable is "only available in iOS 17.0 or newer" so I guess I need to find another way of doing this myself, as my target is for older versions of the OS. (My iPhone X won't run iOS 17 😩) I guess I need to learn just what @Observable does behind the scenes!

Took forever.. here is my solution : enum SquareRootFinderError: Error { case outOfBounds, noRoot } func squareRootFinder(number: Int) throws -> Int { if number < 1 || number > 10_000 { throw SquareRootFinderError.outOfBounds } var i = 0 while i * i <= number { i += 1 } let squareRoot = i - 1 if squareRoot * squareRoot != number { throw SquareRootFinderError.noRoot} return squareRoot } let numberToBeSquared = 100 do { let result = try squareRootFinder(number: numberToBeSquared) print("The square root of \(numberToBeSquared) is \(result)") } catch SquareRootFinderError.outOfBounds { print("Please use a number from 1 - 10,000") } catch SquareRootFinderError.noRoot { print("Cannot find a root") } catch { print("There was an error") }

Great👍, Hudson

The dogs are adorable ☺

Hi Paul, I had a question. You mentioned to have a shuffled array we need to use array.shuffled here. Could you please help understand why we cannot use set here and may be a use case where set can be used rather than this? BTW, I am really loving the swiftUI 100days and how it is structured it is practical to follow and useful. Thank you for creating this.

I would like my app to rewind 2 views upon a certain error. My views are not Ints, they're views I've defined. Currently I am using multiple binding bools to programmatically rewind. Isn't their a way to have every view access the same path and allow me to manipulate it?

A very basic solution: struct Car { let model: String let seatsNumber: Int private(set) var currentGear: Int = 0 var currentSpeed: Int = 0 { didSet { if oldValue - currentSpeed >= 10 { changeGear(.down) } else if currentSpeed - oldValue >= 10 { changeGear(.up) } } } enum GearChangeCommand { case up, down } mutating private func changeGear(_ command: GearChangeCommand) { switch command { case .down where currentGear > 0: currentGear -= 1 print("Changing gear to \(currentGear) at \(currentSpeed)") case .up where currentGear < 6: currentGear += 1 print("Changing gear to \(currentGear) at \(currentSpeed)") print("Changing gear to \(currentGear) at \(currentSpeed)") default: break } } }

I feel like I’ll never be good at layouts. There are so many options.

Speechless, this is the best dev video ive seen on YT - period. Seriously awesome stuff Paul. Also your 100 days of SwiftUI course is incredible!

Hi Paul Hudson I’m using SwiftData for managing my app’s data and am planning to make some changes to the data model. Specifically, I want to add a new attribute and change an existing one. I want to ensure that users won’t lose their data during this migration. What are the best practices and recommended techniques for handling data model migrations in SwiftData? Are there any specific steps I should follow or tools I should use to perform a seamless migration? Additionally, how can I test the migration process to ensure data integrity? Best regards SwiftLotus

In Swift, is it safe to modify 𝘢 collection (in this case removing members) while iterating over it?