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@christianselig
christianselig / swift-async-await-example.swift
Created February 28, 2022 20:46
Some questions about async await threading in Swift's new concurrency model.
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
Task {
// 1️⃣❓ UIViewController is in a MainActor context, so this Task
// will inherit that, so the following pretend expensive call will
// be on the main thread and likely block?
ExpensiveOperationPerformer.doExpensiveLoopAndPrint()
}
@insidegui
insidegui / reloadplugins.sh
Created January 29, 2022 23:00
Make your Mac app's extensions immediately available on macOS with a run script build phase
# Add this to a "Run Script" build phase in your app's main target, as the last step.
# It will use the pluginkit command-line tool to force the plugin system on macOS to add your extensions to its database, making them available.
# I made this specifically for widgets, but it should work for pretty much any extension type (appex bundle).
find $CODESIGNING_FOLDER_PATH -name '*.appex' -exec pluginkit -a {} \;
import UIKit
extension UITextField {
/// Add a trailing placeholder label that tracks the text as it changes
func addTrailingPlaceholder(_ placeholder: String) {
let label = UILabel()
label.text = placeholder
label.alpha = 0.3
label.isHidden = true
let container = UIView()
@rileytestut
rileytestut / ExportIPA.swift
Last active October 24, 2025 05:46
Export Swift Playgrounds .ipa
import Foundation
// Export running app as .ipa, then return path to exported file.
// Returns String because app crashes when returning URL from async function for some reason...
func exportIPA() async throws -> String
{
// Path to app bundle
let bundleURL = Bundle.main.bundleURL
// Create Payload/ directory
@lukaskubanek
lukaskubanek / Bundle+TestFlight.swift
Last active September 29, 2025 14:26
A code snippet for detecting the TestFlight environment for a macOS app at runtime
/// MIT License
///
/// Copyright (c) 2021 Lukas Kubanek, Structured Path GmbH
///
/// Permission is hereby granted, free of charge, to any person obtaining a copy
/// of this software and associated documentation files (the "Software"), to deal
/// in the Software without restriction, including without limitation the rights
/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
/// copies of the Software, and to permit persons to whom the Software is
/// furnished to do so, subject to the following conditions:
@kylehughes
kylehughes / TornRectangle.swift
Last active October 29, 2025 06:02
A rectangle shape for SwiftUI that can render any edge like a torn piece of paper.
// Copyright 2021 Kyle Hughes
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
// documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
// Software.
//
@krzyzanowskim
krzyzanowskim / StringGetSizeThatFits.swift
Last active July 11, 2025 10:45
Calculate frame of String, that fits given width
// Excerpt from https://github.com/krzyzanowskim/CoreTextWorkshop
// Licence BSD-2 clause
// Marcin Krzyzanowski marcin@krzyzanowskim.com
func getSizeThatFits(_ attributedString: NSAttributedString, maxWidth: CGFloat) -> CGSize {
let framesetter = CTFramesetterCreateWithAttributedString(attributedString)
let rectPath = CGRect(origin: .zero, size: CGSize(width: maxWidth, height: 50000))
let ctFrame = CTFramesetterCreateFrame(framesetter, CFRange(), CGPath(rect: rectPath, transform: nil), nil)
@christianselig
christianselig / Locale+SFSymbol.swift
Created September 3, 2021 21:54
Returns an SF Symbol currency image that match's the device's current locale, for instance dollar in North America, Indian rupee in India, etc.
extension Locale {
/// Returns an SF Symbol currency image that match's the device's current locale, for instance dollar in North America, Indian rupee in India, etc.
func currencySFSymbol(filled: Bool, withConfiguration configuration: UIImage.Configuration? = nil) -> UIImage {
// Default currency symbol will be the Animal Crossing Leaf coin 􁂬 to remain impartial to any specific country
let defaultSymbol = UIImage(systemName: "leaf.circle\(filled ? ".fill" : "")")!
guard let currencySymbolName = currencySymbolNameForSFSymbols() else { return defaultSymbol }
let systemName = "\(currencySymbolName).circle\(filled ? ".fill" : "")"
return UIImage(systemName: systemName, withConfiguration: configuration) ?? defaultSymbol
@Dexwell
Dexwell / LocalCommunicationNotification.swift
Last active July 2, 2025 09:54
iOS 15 Local Communication Notification
var content = UNMutableNotificationContent()
content.title = "Title"
content.subtitle = "Subtitle"
content.body = "Text"
content.sound = nil
content.categoryIdentifier = "categoryName"
var personNameComponents = PersonNameComponents()
personNameComponents.nickname = "Sender Name"
@steipete
steipete / RandomColor.swift
Created April 6, 2021 17:20
Random Color for SwiftUI
extension Color {
/// Return a random color
static var random: Color {
return Color(
red: .random(in: 0...1),
green: .random(in: 0...1),
blue: .random(in: 0...1)
)
}
}