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enum Parked {}
enum Driving {}
enum Gaming {}

private class EngineSystem {
  static var shared = EngineSystem()
  private init() {}
  
  func start() {/**/}
  func accelerate() { /* Uses gas pedal input to accelerate the real car */ }

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2023

December

• Presenting SharePlay activities from your app’s UI

  Make it easy for people to start activities from your app’s UI, from the system share sheet, or using AirPlay over AirDrop. After you define one or more SharePlay activities for your app, make them easy for people to discover in your UI. Include buttons, menus items, and other elements to start activities, present activities in system interfaces like the share sheet, and update your activities to take advantage of other system behaviors.

  Starting an activity requires an active FaceTime call or Messages conversation. When a conversation is active, you can start an activity right away from your UI. If no conversation is active, the Group Activities framework facilitates starting a conversation as part of starting your activity. Some system features also help you start conversations. > For guidance about the best ways

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WWDC  2001  2002  2003  2004              2007  2008  2009
2010 2011 2012 2013 

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//
//  ContentView.swift
//  Example of using matchedGeometryEffect in iOS 13 code
//  matchedGeometryEffect example code taken and adapted from : 
//  https://sarunw.com/posts/a-first-look-at-matchedgeometryeffect/
//
//  Created by Emil Pedersen on 16/10/2020.
//

struct ContentView: View {

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15a16
>   -interpret     Immediate mode
17a19
>   -repl          REPL mode (the default if there is no input file)
20,22c22,45
<   -application-extension Restrict code to those available for App Extensions
<   -assert-config <value> Specify the assert_configuration replacement. Possible values are Debug, Release, Replacement.
<   -color-diagnostics     Print diagnostics in color
---
>   -application-extension  Restrict code to those available for App Extensions

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import _Concurrency
import Combine
import Dispatch
import Foundation

// MARK: General

struct SomeError: Error {}

extension AnyPublisher {

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//
//  NSObject+setValuesForKeysWithJSONDictionary.h
//
//  Created by Tom Harrington on 12/29/11.
//  Tweaked by Mark Dalrymple
//
//  Copyright (c) 2011 Atomic Bird, LLC. All rights reserved.
//

#import <Foundation/Foundation.h>

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//
//	Runtime.swift
//	Swift Runtime [Swift 4]
//
//	The MIT License (MIT)
//
//	Copyright (c) 2016 Electricwoods LLC, Kaz Yoshikawa.
//
//	Permission is hereby granted, free of charge, to any person obtaining a copy
//	of this software and associated documentation files (the "Software"), to deal

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import SwiftUI
import PanModal

struct ExampleView: View {
    
    @State var detail: AnyView? = nil
    @State var items: [String] = ["Detail 1", "Detail 2", "Detail 3"]
    
    var body: some View {
        NavigationView {

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import Foundation

extension Data {
    var prettyPrintedJSONString: NSString? { /// NSString gives us a nice sanitized debugDescription
        guard let object = try? JSONSerialization.jsonObject(with: self, options: []),
              let data = try? JSONSerialization.data(withJSONObject: object, options: [.prettyPrinted]),
              let prettyPrintedString = NSString(data: data, encoding: String.Encoding.utf8.rawValue) else { return nil }

        return prettyPrintedString
    }