feat: experimenting with 00 in playgrounds

.gitignore

@@ -0,0 +1,81 @@
+# Xcode
+#
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+
+## Build generated
+build/
+DerivedData/
+
+## Various settings
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata/
+
+## Other
+*.moved-aside
+*.xccheckout
+*.xcscmblueprint
+
+## Obj-C/Swift specific
+*.hmap
+*.ipa
+*.dSYM.zip
+*.dSYM
+
+## Playgrounds
+timeline.xctimeline
+playground.xcworkspace
+
+# Swift Package Manager
+#
+# Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
+# Packages/
+# Package.pins
+# Package.resolved
+.build/
+
+# CocoaPods
+#
+# We recommend against adding the Pods directory to your .gitignore. However
+# you should judge for yourself, the pros and cons are mentioned at:
+# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
+#
+# Pods/
+#
+# Add this line if you want to avoid checking in source code from the Xcode workspace
+# *.xcworkspace
+
+# Carthage
+#
+# Add this line if you want to avoid checking in source code from Carthage dependencies.
+# Carthage/Checkouts
+
+Carthage/Build
+
+# fastlane
+#
+# It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the
+# screenshots whenever they are needed.
+# For more information about the recommended setup visit:
+# https://docs.fastlane.tools/best-practices/source-control/#source-control
+
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots/**/*.png
+fastlane/test_output
+
+# Code Injection
+#
+# After new code Injection tools there's a generated folder /iOSInjectionProject
+# https://github.com/johnno1962/injectionforxcode
+
+iOSInjectionProject/
+
+
+private/

00-Introduction-to-Swift/MyPlayground.playground/Pages/Arrays.xcplaygroundpage/Contents.swift

@@ -2,6 +2,56 @@
 
 import Foundation
 
-var str = "Hello, playground"
+
+func arrayTypes() {
+    let songs: [String] = [
+        "Shake It Off",
+        "Welcome to New York",
+        "You Belong with Me",
+    ]
+
+    type(of: songs)
+
+
+    let items: [Any] = [
+        "This array contains items of",
+        2,
+        "different data types"
+    ]
+
+    type(of: items)
+}
+
+
+func arrayInitialization() {
+//    var awards: [String]
+//
+//    awards[0] = "Grammy"
+    let awards: [String] = []
+
+    type(of: awards)
+}
+
+
+func arrayOperators() {
+    var awards: [String] = []
+    
+    awards += ["Grammy", "Oscar"]
+    awards.append("Tony")
+
+    print(awards)
+}
+
+
+
+func main() {
+    arrayTypes()
+    arrayInitialization()
+    arrayOperators()
+}
+
+
+main()
+
 
 //: [Next](@next)

00-Introduction-to-Swift/MyPlayground.playground/Pages/Class Properties.xcplaygroundpage/Contents.swift

@@ -0,0 +1,36 @@
+//: [Previous](@previous)
+
+import Foundation
+
+struct Person {
+    static var species: String = "Homo Sapien"
+    var age: Int
+    
+    var clothes: String {
+        willSet {
+            updateUI(msg: "I'm changing from \(clothes) to \(newValue)")
+        }
+        didSet {
+            updateUI(msg: "I just changed from \(oldValue) to \(clothes)")
+        }
+    }
+    
+    var ageInDogYears: Int {
+        return age * 7
+    }
+    
+    func updateUI(msg: String) {
+        print(msg)
+    }
+}
+
+
+func demo1() {
+    var taylor = Person(clothes: "T-Shirt", age: 29)
+    
+    taylor.clothes = "T-Shirt and Jeans"
+}
+
+
+demo1()
+//: [Next](@next)

00-Introduction-to-Swift/MyPlayground.playground/Pages/Classes.xcplaygroundpage/Contents.swift

@@ -0,0 +1,65 @@
+//: [Previous](@previous)
+
+import Foundation
+
+
+class Singer {
+    var name: String
+    var age: Int
+    
+    init(name: String, age: Int) {
+        self.name = name
+        self.age = age
+    }
+    
+    func sing() {
+        print("La la la")
+    }
+}
+
+class RockSinger: Singer {
+    override func sing() {
+        print("Yeah yeah yeah")
+    }
+}
+
+
+class HeavyMetalSinger: Singer {
+    var noiseLevel: Int
+    
+    init(name: String, age: Int, noiseLevel: Int) {
+        self.noiseLevel = noiseLevel
+        
+        super.init(name: name, age: age)
+    }
+    
+    override func sing() {
+        print("Grrrrrr rrr")
+    }
+}
+
+
+func demo1() {
+    let taylor = Singer(name: "Taylor Swift", age: 29)
+    let bono = RockSinger(name: "Bono", age: 100)
+    let metalSinger = HeavyMetalSinger(name: "Rage", age: 10, noiseLevel: 2)
+    
+    bono.sing()
+    metalSinger.sing()
+}
+
+
+func instancesAreCopiedByReference() {
+    let taylor = Singer(name: "Taylor Swift", age: 29)
+    let imposter = taylor
+    
+    imposter.age = 33
+    
+    print(taylor.age)
+}
+
+
+
+demo1()
+instancesAreCopiedByReference()
+//: [Next](@next)

00-Introduction-to-Swift/MyPlayground.playground/Pages/Data Types.xcplaygroundpage/Contents.swift

@@ -2,6 +2,20 @@
 
 import Foundation
 
-var str = "Hello, playground"
+var latitude: Double = 42.111234
+var longitude: Float = -122.9283233
+
+// Floats preserve accuracy of the most significant digits first
+longitude = -11.232323
+longitude = -112.32323
+longitude = -1123.2323
+longitude = -11232.323
+
+// Doubles have twice the accuracy of Floats, and can preserve twice as many digits
+latitude = -11.232323
+latitude = -112.32323
+latitude = -1123.2323
+latitude = -11232.323
+latitude = -11232.32323423909109
 
 //: [Next](@next)

00-Introduction-to-Swift/MyPlayground.playground/Pages/Enumerations.xcplaygroundpage/Contents.swift

@@ -0,0 +1,37 @@
+//: [Previous](@previous)
+
+import Foundation
+
+
+enum WeatherType {
+    case sun
+    case cloud
+    case rain
+    case wind(speed: Double)
+    case snow
+}
+
+
+func getHaterStatus(when weatherType: WeatherType) -> String? {
+    switch weatherType {
+    case .wind(let speed) where speed < 10:
+        return "Calm"
+    case .sun, .wind:
+        return "Hate"
+    case .rain:
+        return "Prickly"
+    case .cloud, .snow:
+        return nil
+    }
+}
+
+
+func demo1() {
+    print(getHaterStatus(when: .sun))
+    print(getHaterStatus(when: .wind(speed: 4.0)))
+    print(getHaterStatus(when: .wind(speed: 100.0)))
+}
+
+
+demo1()
+//: [Next](@next)

00-Introduction-to-Swift/MyPlayground.playground/Pages/Functions.xcplaygroundpage/Contents.swift

@@ -2,6 +2,101 @@
 
 import Foundation
 
-var str = "Hello, playground"
+
+func logLetters(string: String) {
+    print("The string \"\(string)\" has \(string.count) letters")
+}
+
+
+func logLetters(in string: String) {
+    print("The string \"\(string)\" has \(string.count) letters")
+}
+
+func logLetters(_ str: String) {
+    print("The string \"\(str)\" has \(str.count) letters")
+}
+
+func isAlbumTaylors(name: String) -> Bool {
+    return [
+        "Taylor Swift",
+        "Fearless",
+        "Speak Now",
+        "1989",
+        "Red",
+        "Reputation"
+    ].contains(name)
+}
+
+
+func getHaterStatus(weather: String) -> String? {
+    if weather == "Sunny" {
+        return nil
+    } else {
+        return "Hate"
+    }
+}
+
+
+func getAlbumReleaseYear(name: String) -> Int? {
+    if name == "Taylor Swift" { return 2006 }
+    if name == "Fearless" { return 2008 }
+    if name == "Speak Now" { return 2010 }
+    if name == "Red" { return 2012 }
+    if name == "1989" { return 2014 }
+    if name == "Reputation" { return 2017 }
+    
+    return nil
+}
+
+
+
+func externalAndInternalParameters() {
+    logLetters(string: "Fearless")
+    logLetters(in: "Hide")
+    logLetters("Solo")
+}
+
+func returnTypes() {
+    print(isAlbumTaylors(name: "A Better Tomorrow"))
+    print(isAlbumTaylors(name: "1989"))
+}
+
+
+func optionals() {
+//    var status: String
+    var status: String?
+    
+    status = getHaterStatus(weather: "Stormy")
+    status = getHaterStatus(weather: "Sunny")
+    
+    if let unwrappedStatus = status {
+        print("Hater status confirmed")
+    } else {
+        print("No hater status")
+    }
+    
+    if let newStatus = getHaterStatus(weather: "Hot") {
+        print("Hater status confirmed")
+    }
+}
+
+
+func forceUnwrapping() {
+    let year = getAlbumReleaseYear(name: "Red")
+    
+    
+    if (year == nil) {
+        print("No release year found")
+    } else {
+        print("Release Year: \(year!)")
+    }
+}
+
+
+
+externalAndInternalParameters()
+returnTypes()
+optionals()
+forceUnwrapping()
 
 //: [Next](@next)

00-Introduction-to-Swift/MyPlayground.playground/Pages/Loops.xcplaygroundpage/Contents.swift

@@ -2,9 +2,28 @@
 
 import Foundation
 
+func ranges() {
+    for i in 1...3 {
+        print("Closed Range: Step \(i)")
+    }
+    
+    print()
+    
+    for i in 1..<3 {
+        print("Half-Open Range: Step \(i)")
+    }
+    
+    print()
+    
+    print("Haters gonna ")
+    for _ in 1...5 {
+        print("hate")
+    }
+}
 
 
 func main() {
+    ranges()
 }
 
 

00-Introduction-to-Swift/MyPlayground.playground/Pages/Operators.xcplaygroundpage/Contents.swift

@@ -2,6 +2,19 @@
 
 import Foundation
 
-var str = "Hello, playground"
 
+func stringConcatenation() {
+    let firstName = "Taylor"
+    let lastName = "Swift"
+    
+    let fullName = firstName + " " + lastName
+}
+
+
+func main() {
+    stringConcatenation()
+}
+
+
+main()
 //: [Next](@next)

00-Introduction-to-Swift/MyPlayground.playground/Pages/Optional Chaining.xcplaygroundpage/Contents.swift

@@ -0,0 +1,45 @@
+//: [Previous](@previous)
+
+import Foundation
+
+func getAlbumReleaseYear(for name: String) -> Int? {
+    if name == "Taylor Swift" { return 2006 }
+    if name == "Fearless" { return 2008 }
+    if name == "Speak Now" { return 2010 }
+    if name == "Red" { return 2012 }
+    if name == "1989" { return 2014 }
+    if name == "Reputation" { return 2017 }
+    
+    return nil
+}
+
+func getAlbumReleased(in year: Int) -> String? {
+    if year == 2006 { return "Taylor Swift" }
+    if year == 2008 { return "Fearless" }
+    if year == 2010 { return "Speak Now" }
+    if year == 2012 { return "Red" }
+    if year == 2014 { return "1989" }
+    if year == 2017 { return "Reputation"  }
+    
+    return nil
+}
+
+
+func demo1() {
+    let album = getAlbumReleased(in: 2006)
+    
+    print("\(album?.uppercased()) was released in 2006")
+}
+
+
+func nilCoalescingDemo() {
+    let album = getAlbumReleased(in: 2006)
+    
+    print("\(album ?? "Nothing that we know of") was released in 2006")
+}
+
+
+demo1()
+nilCoalescingDemo()
+
+//: [Next](@next)

00-Introduction-to-Swift/MyPlayground.playground/Pages/Polymorphism.xcplaygroundpage/Contents.swift

@@ -0,0 +1,86 @@
+//: [Previous](@previous)
+
+import Foundation
+
+class Album {
+    var name: String
+    
+    var salesPerformance: String {
+        return "The album  \"\(name)\" sold lots"
+    }
+    
+    init(name: String) {
+        self.name = name
+    }
+}
+
+
+class StudioAlbum: Album {
+    var studio: String
+    
+    override var salesPerformance: String {
+        return "The studio album \"\(name)\" sold lots"
+    }
+    
+    init(name: String, studio: String) {
+        self.studio = studio
+        super.init(name: name)
+    }
+}
+
+
+class LiveAlbum: Album {
+    var location: String
+    
+    override var salesPerformance: String {
+        return "The live album \"\(name)\" sold lots"
+    }
+    
+    init(name: String, location: String) {
+        self.location = location
+        super.init(name: name)
+    }
+}
+
+let taylorSwift = StudioAlbum(name: "Taylor Swift", studio: "The Castles Studio")
+let fearless = StudioAlbum(name: "Fearless", studio: "Aimeeland Studio")
+let iTunesLive = LiveAlbum(name: "iTunes Live from SoHo", location: "NYC")
+
+
+func optionalDowncasting() {
+    let allAlbums: [Album] = [taylorSwift, fearless, iTunesLive]
+    
+    print(allAlbums)
+    
+    for album in allAlbums {
+        print(album.salesPerformance)
+        
+        if let studioAlbum = album as? StudioAlbum {
+            print(studioAlbum.studio)
+        } else if let liveAlbum = album as? LiveAlbum {
+            print(liveAlbum.location)
+        }
+    }
+    
+    for album in allAlbums as? [LiveAlbum] ?? [LiveAlbum]() {
+        print(album.location)
+    }
+}
+
+func forcedDowncasting() {
+    let allAlbums: [Album] = [taylorSwift, fearless]
+    
+    for album in allAlbums {
+        let studioAlbum = album as! StudioAlbum
+        print(studioAlbum.studio)
+    }
+    
+    for album in allAlbums as! [StudioAlbum] {
+        print(album.studio)
+    }
+}
+
+
+optionalDowncasting()
+forcedDowncasting()
+//: [Next](@next)

00-Introduction-to-Swift/MyPlayground.playground/contents.xcplayground

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<playground version='6.0' target-platform='ios' executeOnSourceChanges='false'>
+    <pages>
+        <page name='Data Types'/>
+        <page name='Operators'/>
+        <page name='Arrays'/>
+        <page name='Loops'/>
+        <page name='Functions'/>
+        <page name='Optional Chaining'/>
+        <page name='Enumerations'/>
+        <page name='Classes'/>
+        <page name='Class Properties'/>
+        <page name='Polymorphism'/>
+    </pages>
+</playground>

MyPlayground.playground/Contents.swift

@@ -1,3 +0,0 @@
-import UIKit
-
-var str = "Hello, playground"

MyPlayground.playground/contents.xcplayground

@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<playground version='5.0' target-platform='ios' executeOnSourceChanges='false'>
-    <timeline fileName='timeline.xctimeline'/>
-</playground>

README.md

@@ -0,0 +1,91 @@
+<img src="/logo.png" width="1000">
+
+#### My project portfolio from following along with the book [Hacking With Swift](https://www.hackingwithswift.com/read).
+
+![Shield.io MIT License Shield](https://img.shields.io/github/license/mashape/apistatus.svg)
+
+
+### Beginner 📕
+
+| #    | Project                      | Topics Learned   | Progress   |
+| :--: | :--------------------------: | :--------------: | :--------: |
+| 0    | 🛠<br>[Introduction to Swift](/00-Introduction-to-Swift)  | Playgrounds, Constants & Variables, Data Types, Operators, String Interpolation, Arrays & Dictionaries, Conditional Statements, Control Flow, Functions & Methods, Optionals, Enumerations, Classes & Structures, Property Observers, Access Control, Typecasting, Closures | 🔴 |
+| 1    | 📱<br>[Storm Viewer](/01-Storm-Viewer)           | Xcode, UIKit, UIViewController, `super`, viewDidLoad(), FileManager, Bundle, `try-catch` Blocks, print(), Storyboards & Interface Builder, UITableView, UITableViewDelegate, UITableViewDataSource, UIImageView, UIImage, UIButton, Auto Layout, Outlets & Actions, UINavigationController | 🔴 |
+| 2    | 🕹<br>[Guess the Flag](/02-Guess-the-Flag)         | UIButton, Asset Catalogs, Retina displays & @2x and @3x images, UIControlState, CALayer, UIView, UIColor, CGColor, Random Numbers, UIAlertController, UIAlertAction, UILabel | 🔴 |
+| 3    | 🛠 [Social Media](/03-Social-Media)              | UIActivityViewController, UINavigationBar, UIBarButtonItem, `#selector` & `@objc`, Info.plist, Privacy & Permissions | 🔴 |
+| 4    | 📱<br>[Easy Browser](/04-Easy-Browser)           | WKWebView, URL, URLRequest, UIToolbar, UIProgressView, KVO Design Pattern, WKNavigationDelegate | 🔴 |
+| 5    | 🕹<br>[Word Scramble](/05-Word-Scramble)          | String Methods, NSRange, UITextChecker, lowercased(), IndexPath | 🔴 |
+| 6    | 🛠<br>[Auto Layout](/06-Auto-Layout)            | Ctrl-drag, Visual Format Language | 🔴 |
+| 7    | 📱<br>[WH Petitions](/07-White-House-Petitions)           | UITabBarController, Parsing JSON, SwiftyJSON didFinishLaunchingWithOptions | 🔴 |
+| 8    | 🕹<br>[Seven Swifty Words](/08-Seven-Swifty-Words)     | addTarget(), enumerated(), index(of:), joined(), replacingOccurrences(), Property Observers, Range Operators | 🔴 |
+| 9    | 🛠<br>[Grand Central Dispatch](/09-Grand-Central-Dispatch) | async(), DispatchQueue.main, Quality of Service, global(), performSelector(inBackground:) | 🔴 |
+| 10   | 📱<br>[Names to Faces](/10-Names-to-Faces)   | UICollectionView, UICollectionViewCell, UICollectionViewDelegate, UICollectionViewDataSource, UIImagePickerController, UUID, Custom NSObject Classes | 🔴 |
+| 11   | 🕹<br>[Peggle](/11-Peggle)                 | CGFloat, SKSpriteNode, UITouch, SKPhysicsBody, circleOfRadius, SKPhysicsContactDelegate, SKLabelNode, SKEmitterNode | 🔴 |
+| 12   | 🛠<br>[User Defaults](/12-User-Defaults)   | NSCoding, Codable | 🔴 |
+| 13   | 📱<br>[Instafilter](/13-Instafilter)            | UISlider, CIContext, CIFilter | 🔴 |
+| 14   | 🕹<br>[Whack-a-Penguin](/14-Whack-a-Penguin)        | SKCropNode, SKTexture, SKActions, asyncAfter() | 🔴 |
+| 15   | 🛠<br>[Core Animation](/15-Animation)         | `switch`, `case`, animate(withDuration:), CGAffineTransform, CGFloat.pi | 🔴 |
+
+### Intermediate 📗
+
+| #    | Project Name                | Topics Learned | Progress |
+| :--: | :-------------------------: | :------------: | :------: |
+| 16   | 📱<br>[JavaScript Injection](/16-JavaScript-Injection)  | NSExtensionItem, plists, NSDictionary, UITextView, NSItemProvider, kUTTypePropertyList, Keyboard Notifications, NSValue, CGRect, CGPoint, CGSize, UIEdgeInsets | 🔴 |
+| 17   | 🕹<br>[Fruity Penguins](/17-Fruity-Penguins)       | SKShapeNode, CGPath, UIBezierPath, AVAudioPlayer, CaseIterable & Custom Enums, Default Method Parameters | 🔴 |
+| 18   | 🛠<br>[Debugging](/18-Debugging)             | `print`, `assert`, breakpoints, Visual Debugging | 🔴 |
+| 19   | 📱<br>[Capital Cities](/19-Capital-Cities)        | MKMapView, MKAnnotation, MKPinAnnotationView, CLLocationCoordinate2D, dequeueReusableAnnotationView() | 🔴 |
+| 20   | 🕹<br>[Fireworks Night](/20-Fireworks-Night)       | Timer, SKNode, follow(), motionBegan(), prefersStatusBarHidden, Timer.invalidate() | 🔴 |
+| 21   | 🛠<br>[Local Notifications](/21-Local-Notifications)   | UNUserNotificationCenter, UNNotificationRequest, UNNotificationAction, UNNotificationCategory, UNUserNotificationCenterDelegate, UNNotificationDefaultActionIdentifier | 🔴 |
+| 22   | 📱<br>[Detect-A-Beacon](/22-Detect-A-Beacon)       | Core Location, CLBeaconRegion, CLLocationManager, startMonitoring(for:), startRangingBeacons(in:), `uuidgen`, CLBeaconRegion, CLProximity | 🔴 |
+| 23   | 🕹<br>[Space Race](/23-Space-Race)            | Per-Pixel Collision Detection, Advancing Particle Systems, Adjust Linear & Angular Damping, touchesEnded(), touchesMoved(), touchesBegan() | 🔴 |
+| 24   | 🛠<br>[Swift Extensions](/24-Swift-Extensions/SwiftExtensions.playground)      | `mutating`, Protocol-Oriented Programming, Methods as Verbs, Properties as State, ExSwift | 🔴 |
+| 25   | 📱<br>[Selfie Share](/25-Selfie-Share)             | MCSession, MCBrowswerViewController, showConnectionPrompt(), MCPeerID, MCAdvertiserAssistant, MCSessionDelegate, MCBrowserViewControllerDelegate, Data, data(using:), String.Encoding.utf8 | 🔴 |
+| 26   | 🕹<br>[Marble Maze](/26-Marble-Maze)              | categoryBitMask, collisionBitMask, contactTestBitMask, CMMotionManager, update() | 🔴 |
+| 27   | 🛠<br>[Core Graphics](/27-Core-Graphics)            | UIGraphicsImageRenderer, UIGraphicsImageRendererContext, CGContext, addRect(), addEllipse(), String.draw(with:), UIFont, NSMutableParagraphStyle() | 🔴 |
+| 28   | 📱<br>[Secret Swift](/28-Secret-Swift)             | KeychainWrapper, resignFirstResponder(), NotificationCenter, UIApplication.willResignActiveNotification, LocalAuthentication, LAContext, canEvaluatePolicy(), .deviceOwnerAuthenticationWithBiometrics, evaluatePolicy(), `[unowned self]`, `self`, Privacy for Touch ID & Face ID | 🔴 |
+| 29   | 🕹<br>[Exploding Monkeys](/29-Exploding-Monkeys)       | UIKit + SpriteKit, Texture Atlases, Scene Transitions, Destructable Terrain | 🔴 |
+| 30   | 🛠<br>[Instruments](/30-Instruments)              | TimeProfiler, Color Blended Layers, Color Offscreen-Rendered Yellow, Color Hits Green and Misses Red | 🔴 |
+
+## Advanced 📘
+
+| #    | Project Name                | Topics Learned   | Progress   |
+| :--: | :-------------------------: | :--------------: | :--------: |
+| 31   | 📱<br>[Multibrowser](/31-Multibrowser)            | UIStackView, iPad Multitasking, addArrangedSubview(), WKNavigationDelegate, UITextFieldDelegate, UIGestureRecognizerDelegate, App Transport Security | 🔴 |
+| 32   | 📱<br>[Swift Searcher](/32-Swift-Searcher)            | Dynamic Type, NSAttributedString, SFSafariViewController, SFSafariViewControllerDelegate, Core Spotlight, UIContentSizeCategoryDidChange | 🔴 |
+| 33   | 📱<br>[Name That Tune](/33-Name-that-Tune)          | AVAudioRecorder, AVAudioSession, requestRecordPermission(), CloudKit, CKRecord, CKAsset, CloudKit Dashboard, CKQueryOperation, NSPredicate, CKRecord.Reference, fetch(withRecordID:), save(), CKQuerySubscription, NSSortDescriptor | 🔴 |
+| 34   | 🕹<br>[Four in a Row](/34-Connect-Four)            | GameplayKit AI, GKGameModel, GKGameModelPlayer, GKGameModelUpdate, AI Heuristics, NSCopying, GKMinmaxStrategist | 🔴 |
+| 35   | 🛠<br>[Random Numbers](/35-Random-Numbers)           | Int.random(in:), Float.random(in:), Double.random(in:), CGFloat.random(in:), Bool.random(), arc4random(), GKRandomSource.sharedRandom(), GKLinearCongruentialRandomSource, GKMersenneTwisterRandomSource, GKARC4RandomSource, GKRandomDistribution, GKShuffledDistribution, GKGaussianDistribution, Fisher-Yates Algorithm, arrayByShufflingObjects(in:) | 🔴 |
+| 36   | 🕹<br>[Crashy Plane](/36-Crashy-Plane)             | Composed Methods,  Scale Modes, Parallax Scrolling, SpriteKit Physics, SKPhysicsContactDelegate, SKPhysicsBody, SKAudioNode, Managing Game State  | 🔴 |
+| 37   | 🕹<br>[Psychic Tester](/37-Psychic-Tester)           | WatchKit Extensions, 3D Touch, CAEmitterLayer, CAGradientLayer, @IBDesignable, @IBInspectable, transition(with:), WCSession, WKInterfaceLabel, WKInterfaceButton | 🔴 |
+| 38   | 🛠<br>[Github Commits (Core Data)](/38-GitHubCommits) | NSFetchRequest, NSManagedObject, NSPredicate, NSSortDescriptor, NSFetchedResultsController, ISO8601DateFormatter | 🔴 |
+| 39   | 🛠<br>[Unit testing with XCTest](/39-Swift-Unit-Tests) | XCTest, `filter()`, Test-Driven Development, Functional Programming, XCTestCase, Setting a Baseline, NSCountedSet, XCUIApplication(), XCUIElementQuery, UI Test Recording | 🔴 |
+
+## Challenges 📙
+
+| #    | Project Name                 | Progress |
+| :--: | :--------------------------: | :------: |
+| 0    | 🛠<br>[Fizz Buzz](/C00-Fizz-Buzz-Test)              | 🔴 |
+| 1    | 📱<br>[Shopping List](/C01-Shopping-List)          | 🔴 |
+| 2    | 📱<br>[World Flags](/C02-World-Flags)            | 🔴 |
+| 3    | 🕹<br>[Hangman](/C03-Hangman)                | 🔴 |
+| 4    | 🛠<br>[Storm Viewer v2.0](/C04-Storm-Viewer-v2.0)     | 🔴 |
+| 5    | 📱<br>[World Facts](/C05-World-Facts)            | 🔴 |
+| 6    | 📱<br>[Apple Notes Clone](/C06-Apple-Notes-Clone)      | 🔴 |
+| 7    | 🕹<br>[Target Practice](/C07-Target-Practice)        | 🔴 |
+| 8    | 🛠<br>[Swift Extensions](/C08-Swift-Extensions)       | 🔴 |
+| 9    | 🛠<br>[Core Graphics Rainbow](/C09-Core-Graphics-Rainbow) | 🔴 |
+| 10   | 📱<br>[Private Photos](/C10-Private-Photos)         | 🔴 |
+
+## Certificate of Completion 🎓
+
+<img src="/certificate.jpg" width="500">
+
+|  KEY  |
+| ----- |
+📱 = App
+🕹 = Game
+🛠 = Technique
+✅ = Complete
+🚧 = In Progress
+🛑 = Not Started
+