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Issue #919
WWDC23 introduces lots of new additions to SwiftUI, notably Metal shader support with these modifiers
Issue #918
Interesting SwiftUI Q&A during WWDC23
Q: With the new SwiftUI @Observable macro, are there any cases where ObservableObject would still be a better alternative?
A: Use ObservableObject when you need to …
Issue #917
Interesting SwiftUI Q&A during WWDC21
Q: Let’s say I have a purely SwiftUI flow. I have a ListView with a @StateObject var listFetcher, that makes requests for a list of items. Tapping on an item in the …
Issue #916
WWDC23 brings new additions to SwiftUI
The scroll transition modifier is very similar to the visual effect modifier Curt used earlier for the welcome screen. It lets you apply effects to items in your scroll view.
I’m …
Issue #915
Here are my favorite iOS articles
Issue #914
Use react-markdown to parse markdown content, react-syntax-highlighter to highlight code, and rehype-raw to parse raw html
import ReactMarkdown from "react-markdown"
import { Prism as SyntaxHighlighter } from …Issue #913
Use QuickLookThumbnailing framework
import AppKit
import QuickLookThumbnailing
actor QuicklookService {
static let shared = QuicklookService()
private let generator = QLThumbnailGenerator.shared
func image( …Issue #912
Perform check before and after suspension point
actor Worker {
var isDoing = false
var toBeDone = Set<String>()
func work(string: String) async {
if isDoing {
toBeDone.insert(string) …Issue #911
Make an parallelTask function that wraps TaskGroup
public func parallelTask(@ParallelTaskBuilder builder: () -> [ParallelTaskBuilder.Work]) async {
await withTaskGroup(of: Void.self) { group in
for work in builder() { …Issue #910
let string = "Hello world"
string[string.startIndex...] // Hello world
string[..<string.endIndex] // Hello world
let string = "Hello world"
let range = string.startIndex ..< …Issue #908
When we add another UIWindow, then its rootViewController will decide the style of the status bar, not the rootViewController of the keyWindow anymore
The usual way to fix this is to defer the decision to the correct …
Issue #905
Protect mutable state with Swift actors
Actor reentrancy
Imagine we have two different concurrent tasks trying to fetch the same image at the same time. The first sees that there is no cache entry, proceeds to start downloading the …
Issue #904
Consider this code where we have an ObservableObject with fetch1 and async fetch2, and a fetch inside ContentView
Here the observation in Xcode 14
Issue #903
let image = NSImage(contentsOf: url)
let imageView = NSImageView(image: image)
image.animates = true
Issue #902
Siri can predict shortcuts to actions that a user may want to perform using your app, and suggest those shortcuts to the user in places such as …
Issue #901
https://com.example/.well-known/apple-app-site-association
Supporting Associated Domains
New format from iOS 13
Can also remove components section if we match all URLs
{
"applinks": { …Issue #900
Listen to didActivateApplicationNotification and check that it is not our app
NSWorkspace.shared.notificationCenter
.publisher(for: NSWorkspace.didActivateApplicationNotification)
.sink(receiveValue: { [weak self] note in …I’m a thinker and storyteller with a passion for exploring the intersection of creativity and technology
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