finish enumerations

Enumerations.playground/Contents.swift

@@ -0,0 +1,186 @@
+import Foundation
+
+enum Animals {
+    case cat
+    case dog
+    case rabbit
+}
+
+let cat = Animals.cat
+cat
+
+if cat == Animals.cat {
+    "This is a cat"
+} else {
+    "This is something else"
+}
+
+switch cat {
+case .cat:
+    "This is a cat"
+    break
+case .dog:
+    "This is a dog"
+    break
+case .rabbit:
+    "This is a rabbit"
+    break
+}
+
+
+
+enum Shortcut {
+    case fileOrFolder(path: URL, name: String)
+    case wwwUrl(path: URL)
+    case song(artist: String, songName: String)
+}
+
+let wwwApple = Shortcut.wwwUrl(path: URL(string: "https://apple.com")!)
+
+switch wwwApple {
+case .fileOrFolder(path: let path, name: let name):
+    path
+    name
+case .wwwUrl(path: let path):
+    path
+case .song(artist: let artist, songName: let songName):
+    artist
+    songName
+}
+
+switch wwwApple {
+case .fileOrFolder(let path, let name):
+    path
+    name
+case .wwwUrl(let path):
+    path
+case .song(let artist, let songName):
+    artist
+    songName
+}
+
+switch wwwApple {
+case let .fileOrFolder(path, name):
+    path
+    name
+case let .wwwUrl(path):
+    path
+case let .song(artist, songName):
+    artist
+    songName
+}
+
+if case let .wwwUrl(path) = wwwApple {
+    path
+}
+
+let withoutYou = Shortcut.song(artist: "Gary", songName: "X")
+
+if case let .song(_, songName) = withoutYou {
+    songName
+}
+
+enum Vehicle {
+    case car(manufacturer: String, model: String)
+    case bike(manufacturer: String, yearMade: Int)
+    
+//    func getManufacturer() -> String {
+//        switch self {
+//        case let .bike(manufacturer, _):
+//            return manufacturer
+//        case let .car(manufacturer, _):
+//            return manufacturer
+//        }
+//    }
+    
+//    var manufacturer: String {
+//        switch self {
+//        case let .bike(manufacturer, _):
+//            return manufacturer
+//        case let .car(manufacturer, _):
+//            return manufacturer
+//        }
+//    }
+    
+    var manufacturer: String {
+        switch self {
+        case let .bike(manufacturer, _), let .car(manufacturer, _):
+            return manufacturer
+        }
+    }
+    
+    var manufacturer_foo: String {
+        switch self {
+        case let .bike(foo, _), let .car(_, foo):
+            return foo
+        }
+    }
+
+}
+
+let car = Vehicle.car(manufacturer: "Tesla", model: "X")
+
+let bike = Vehicle.bike(manufacturer: "HD", yearMade: 2013)
+
+
+car.manufacturer
+bike.manufacturer
+
+car.manufacturer_foo
+bike.manufacturer_foo
+
+
+enum FamilyMember: String {
+    case father = "Dad"
+    case mother = "Mom"
+    case brother = "Bro"
+    case sister = "Sis"
+}
+
+FamilyMember.brother.rawValue
+
+
+enum FavouriteEmoji: String, CaseIterable {
+    case blush = "😊"
+    case rocket = "🚀"
+    case fire = "🔥"
+}
+
+FavouriteEmoji.allCases
+FavouriteEmoji.allCases.map(\.rawValue)
+
+FavouriteEmoji.blush.rawValue
+FavouriteEmoji(rawValue: "😊")
+
+
+enum Height {
+    case short, medium, long
+    mutating func makeLong() {
+        self = Height.long
+    }
+}
+
+var myHeight = Height.medium
+myHeight.makeLong()
+myHeight
+
+
+indirect enum IntOperation {
+    case add(Int, Int)
+    case subtract(Int, Int)
+    case freehand(IntOperation)
+    
+    func calculateResult(of operation: IntOperation? = nil) -> Int{
+        switch operation ?? self {
+        case let .add(lhs, rhs):
+            return lhs + rhs
+        case let .subtract(lhs, rhs):
+            return lhs - rhs
+        case let .freehand(operation):
+            return calculateResult(of: operation)
+        }
+    }
+}
+
+let freeHand = IntOperation.freehand(.add(4, 1))
+freeHand.calculateResult()

Enumerations.playground/contents.xcplayground

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<playground version='7.0' target-platform='macos' swift-version='6' buildActiveScheme='true' executeOnSourceChanges='true' importAppTypes='true'/>

swift-playground.xcworkspace/contents.xcworkspacedata

@@ -1,6 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Workspace
    version = "1.0">
+   <FileRef
+      location = "group:Enumerations.playground">
+   </FileRef>
    <FileRef
       location = "group:Structures.playground">
    </FileRef>