Swift Playground

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Learn and explore coding in Swift through interactive learning experiences on the Swift Playground app for iPadOS and macOS.

Posts under Swift Playground tag

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indices(where:) Swift Playgrounds Issue: "Cannot call value of non-function type Range<Int>"
Hey there- I'm having a quite interesting bug on Swift Playgrounds. I am trying to run my app with this following code snippet which does not compile on Swift Playgrounds, yet compiles on XCode (note: this is a Swift Playground app) if #available(iOS 18.0, *) { //simple function to get the indices of other items that have the same date as the "date" variable let indices = data!.indices(where: { item in let sameMonth = Calendar.current.component(.month, from: item.time) == Calendar.current.component(.month, from: date) let sameYear = Calendar.current.component(.year, from: item.time) == Calendar.current.component(.year, from: date) let sameDay = Calendar.current.component(.day, from: item.time) == Calendar.current.component(.year, from: date) return sameDay && sameMonth && sameYear }) However, the indices(where:) codeblock seems to stop the app from compiling (ONLY on Swift Playgrounds - it works perfectly fine on XCode). I am getting the following error: Cannot call value of non-function type 'Range<Array<Int>.Index>' (aka 'Range<Int>') Please let me know if you have any insight regarding this issue. -ColoredOwl
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Jan ’25
Comparing colors of two ModelEntities
I want to compare the colors of two model entities (spheres). How can i do it? The method i'm currently trying to apply is as follows case let .color(controlColor) = controlMaterial.baseColor, controlColor == .green { // Flip target sphere colour if let targetMaterial = targetsphere.model?.materials.first as? SimpleMaterial, case let .color(targetColor) = targetMaterial.baseColor, targetColor == .blue { targetsphere.model?.materials = [SimpleMaterial(color: .green, isMetallic: false)] // Change to |1⟩ } else { targetsphere.model?.materials = [SimpleMaterial(color: .blue, isMetallic: false)] // Change to |0⟩ } } This method (baseColor) was deprecated in swift 15.0 changes to 'color' but i cannot compare the value color to each other.👾
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626
Jan ’25
Can not use or do anything on the Playgrounds app on iPad Air M2 running iPadOS 18.3 beta
Hi, I have recently downloaded the app to start learning how to code in swift and so on. On my first try I have gotten the error stating that ”.swiftpm files cannot be opened”. I have followed some forum posts. I restarted my iPad several times and redown the app several times. I tried to disable the iCloud sync but I think I deleted the iCloud directory entirely that just results in the app closing on any action taken. (such as pressing the “New App” option or choosing the quick actions to make apps). Is there a way to fix this? Any help is appreciate, please ask me to provide any extra needed information.
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471
Jan ’25
Swift Playgrounds Will Not Upload to App Store Connect
When I go to the App Settings menu in Swift Playgrounds and attempt to upload to App Store Connect, I run into the below error screen: I am registered with the Apple Developer Program. Swift Playgrounds is updated to its latest version. This is occurring on both macOS and iPadOS. All the information I put in is valid. Any reason why this would be happening?
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375
Jan ’25
Playground created on iPad not opening on Mac
I've entered some code on Version 4.5.1 of Playgrounds on my iPad mini running iOS 18.1.1. The file is saved on iCloud and so is available on my Mac running OS 15.2. However, the file will not open in either Playgrounds v 4.5.1 on the Mac (error "Unable to get file wrapper for contents.xcplayground.") or Xcode 16.1 (error "Couldn't load settings from contents.xcplayground"). The file's type is .playgorund. Any thoughts?
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Jan ’25
Using Core ML in a .swiftpm file
Hi everyone, I've been struggling for a few weeks to integrate my Core ML Image Classifier model into my .swiftpm project, and I’m hoping someone can help. Here’s what I’ve done so far: I converted my .mlmodel file to .mlmodelc manually via the terminal. In my Package.swift file, I tried both "copy" and "process" options for the resource. The issues I’m facing: When using "process", Xcode gives me the error: "multiple resources named 'coremldata.bin' in target 'AppModule'." When using "copy", the app runs, but the model doesn’t work, and the terminal shows: "A valid manifest does not exist at path: .../Manifest.json." I even tried creating a Manifest.json manually to test, but this led to more errors, such as: "File format version must be in the form of major.minor.patch." "Failed to look up root model." To check if the problem was specific to my model, I tested other Core ML models in the same setup, but none of them worked either. I feel stuck and unsure of how to resolve these issues. Any guidance or suggestions would be greatly appreciated. Thanks in advance! :)
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1.1k
Jan ’25
How can I use a CreateML model in Swift Playgrounds
I am trying to implement a ML model with Core ML in a playground for a Student Challenge project, but I can not get it to work. I have already tried everything I found online but nothing seems to work (the tutorials where posted long time ago). Anyone knows how to do this with Xcode 15 and the most recent updates?
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2.8k
Jan ’25
Cannot assign build target to usdz file
I’m working in the app playground and want to add my usdz file but when i drag drop the file to my main folder i cannot add target to it which leads to a resource not found error while I build my app. It was working on a normal xcode project but while transitioning to app playground it is not working. How can I fix this issue?
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365
Jan ’25
Empty canvas in Swift Playgrounds Mac 15.1
Hi, First post and I am a total newbie when it comes to Ipads & Macs... And also this forum, so sorry if I post in wrong section. My son use Ipad at school and they use Swift Playground there. To be able to do some programming at home, I have set up Vmware with Sequoia 15.1. I installed the app Swift Playground and try to run the playground Get Started with Code and some other education playgrounds. If I understand correctly, it should be some landscape and a figure on the canvas... For me it is only a blue area. I installed XCode, but could not figure out how to run the learning examples there. Tips? Is it possible to run the education playgrounds there? I removed Swift Playgrounds and installed it again, same issue. I also installed IOS 18.1 (?) but I am not sure it is needed. Any suggestion of how I can get contents to show on the canvas? Except of bying an Ipad. ;)
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Jan ’25
Swift/ Swift UI errors.
Hi everyone, I am a new developer. I am writing some code in swift playgrounds and came across some odd errors. I have looked for solutions and have found nothing. If any more experienced developers could point me in the right direction, that would be great.
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517
Dec ’24
Vision Framework Causes EXC_BREAKPOINT Error in Xcode App Playground (.swiftpm) File
I’m trying to use the Vision framework in a Swift Playground to perform face detection on an image. The following code works perfectly when I run it in a regular Xcode project, but in an App Playground, I get the error: Thread 12: EXC_BREAKPOINT (code=1, subcode=0x10321c2a8) Here's the code: import SwiftUI import Vision struct ContentView: View { var body: some View { VStack { Text("Face Detection") .font(.largeTitle) .padding() Image("me") .resizable() .aspectRatio(contentMode: .fit) .onAppear { detectFace() } } } func detectFace() { guard let cgImage = UIImage(named: "me")?.cgImage else { return } let request = VNDetectFaceRectanglesRequest { request, error in if let results = request.results as? [VNFaceObservation] { print("Detected \(results.count) face(s).") for face in results { print("Bounding Box: \(face.boundingBox)") } } else { print("No faces detected.") } } let handler = VNImageRequestHandler(cgImage: cgImage, options: [:]) do { try handler.perform([request]) // This line causes the error. } catch { print("Failed to perform Vision request: \(error)") } } } The error occurs on this line: try handler.perform([request]) Details: This code runs fine in a normal Xcode project (.xcodeproj). I'm using an App Playground instead (.swiftpm). The image is being included in the .xcassets folder. Is there any way I can mitigate this issue? Please do not recommend switching to .xcodeproj, as I am making a submission for Apple's Swift Student Challenge, and they require that I use .swiftpm.
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430
Dec ’24
Why am I unable to render .dae file in Playground?
This is my code in ContentView: import SwiftUI import SceneKit import PlaygroundSupport struct ContentView: View { var body: some View { VStack { Text("SceneKit with SwiftUI") .font(.headline) .padding() SceneView( scene: loadScene(), options: [.autoenablesDefaultLighting, .allowsCameraControl] ) .frame(width: 400, height: 400) .border(Color.gray, width: 1) } } } func loadScene() -> SCNScene? { if let fileURL = Bundle.main.url(forResource: "a", withExtension: "dae") { do { let scene = try SCNScene(url: fileURL, options: [ SCNSceneSource.LoadingOption.checkConsistency: true ]) print("Scene loaded successfully.") return scene } catch { print("Error loading scene: \(error.localizedDescription)") } } else { print("Error: Unable to locate a.dae in Resources.") } return nil } a.dae file exists in the Resources section of macOS Playground app. And a.dae can be viewed in Xcode. Console shows: Error loading scene: The operation couldn’t be completed. (Foundation._GenericObjCError error 0.) Any input is appreciated.
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513
Dec ’24
Application "help" menu does not open main help book page
Following the official documentation, I'm trying to create a set of three localised Help Books. The Help Books should be available in Spanish, English and Polish. Presently, I'm trying to complete English version. App Structure This is the plugin application consisting of main app and the plugin. The main app structure would looks as follows: Files . <XcodeProject Top> ├── Localizable.xcstrings ├── MyAppExtension │   ├── MyAppExtension.swift │   └── <other swift files>.swift ├──MyApp │ ├── Info.plist │   ├── +Array.swift │   ├── +ButtonStyle.swift │   ├── <other app swift files>.swift ├── Resources     └── MyApp.help └── MyApp.help └── Contents ├── Info.plist └── Resources ├── English.lproj │   ├── ExactMatch.plist │   ├── InfoPlist.strings │   ├── MyApp.helpindex │   ├── MyApp.html │   └── pgs └── shrd MyApp / MyApp.help / Info.plist file Consists the following values: Bundle name: MyApp HPDBookAccessPath: MyApp.html HPDBookTitle: My App Help Default localization: en_gb MyApp / Info.plist file Contains the following entries: Help Book directory name: MyApp.help Help Book Identifier: MyApp Help Build phase The Copy Bundle Resources copies MyApp.help in MyApp/Resources. Questions Is the provided folder structure valid for creating a localised help books Is there anything that is missing from across Info.plist files or is in the wrong places? Why the MyApp -> Help opens the main help menu, not the app help
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507
Dec ’24