IanKeen

extension View {
    func relative(width: CGFloat? = nil, height: CGFloat? = nil, alignment: Alignment = .center) -> some View {
        Color.clear
            .frame(maxWidth: width.map { _ in .infinity }, maxHeight: height.map { _ in .infinity })
            .overlay(GeometryReader { proxy in
                ZStack {
                    self.frame(
                        width: width.map { proxy.size.width * $0 },
                        height: height.map { proxy.size.height * $0 }
                    )

jegnux

import SwiftUI
import Combine

public struct ChangeObserver<V: Equatable>: ViewModifier {
    public init(newValue: V, action: @escaping (V) -> Void) {
        self.newValue = newValue
        self.newAction = action
    }

    private typealias Action = (V) -> Void

AliSoftware

/*:
 This is a concept re-implementation of the @Binding and @State property wrappers from SwiftUI

 The only purpose of this code is to implement those wrappers myself
   just to understand how they work internally and why they are needed,

 ⚠️ This is not supposed to be a reference implementation nor cover all
      subtleties of the real Binding and State types.
    The only purpose of this playground is to show how re-implementing
      them myself has helped me understand the whole thing better

BjornRuud

import UIKit

struct UILabelDebugOptions: OptionSet {
    let rawValue: Int

    static let bounds    = UILabelDebugOptions(rawValue: 1 << 0)
    static let ascender  = UILabelDebugOptions(rawValue: 1 << 1)
    static let descender = UILabelDebugOptions(rawValue: 1 << 2)
    static let xHeight   = UILabelDebugOptions(rawValue: 1 << 3)
    static let capHeight = UILabelDebugOptions(rawValue: 1 << 4)

fousa

class FairPlayer: AVPlayer {
  
  private let queue = DispatchQueue(label: "com.icapps.fairplay.queue")
 
  func play(asset: AVURLAsset) {
    // Set the resource loader delegate to this class. The `resourceLoader`'s delegate will be 
    // triggered when FairPlay handling is required.
    asset.resourceLoader.setDelegate(self, queue: queue)
    
    // Load the asset in the player.

rnapier

import Foundation

@dynamicMemberLookup
enum JSON: Codable, CustomStringConvertible {
    var description: String {
        switch self {
        case .string(let string): return "\"\(string)\""
        case .number(let double):
            if let int = Int(exactly: double) {
                return "\(int)"

myell0w

import Foundation
import UIKit


/// Used to create a layout guide that pins to the top of the keyboard
final class KeyboardLayoutGuide {

    private let notificationCenter: NotificationCenter
    private let bottomConstraint: NSLayoutConstraint

ollieatkinson

public protocol Diffable: Hashable {
    
    var primaryKeyValue: String { get }
    
}

/// A type-erased diffable value.
/// The AnyDiffable type forwards diffing, equality comparisons and hashing operations to an underlying diffing value,
/// hiding its specific underlying type.
///

praeclarum

//
//  ArrayDiff.swift
//
//  Created by Frank A. Krueger on 6/30/15.
//  Copyright © 2015 Krueger Systems, Inc. All rights reserved.
//  License: MIT http://opensource.org/licenses/MIT
//

import Foundation

clementgenzmer

/*
 * This is an example provided by Facebook are for non-commercial testing and
 * evaluation purposes only.
 *
 * Facebook reserves all rights not expressly granted.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
 * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN