Swift3.0基础语法学习<三>

  1 //
  2 //  ViewController3.swift
  3 //  SwiftBasicDemo
  4 //
  5 //  Created by 思 彭 on 16/11/16.
  6 //  Copyright © 2016年 思 彭. All rights reserved.
  7 
  8 // 枚举和结构体
  9 
 10 import UIKit
 11 
 12 class ViewController3: UIViewController {
 13 
 14     override func viewDidLoad() {
 15         super.viewDidLoad()
 16         self.title = "枚举和结构体"
 17         // 1. 枚举的使用
 18         let ace = Rank.ace
 19         print(ace)  // ace
 20         let acrRawValue = ace.rawValue
 21         print(acrRawValue)   // 1
 22         
 23         if let convertedRank = Rank(rawValue: 3) {
 24             
 25             let threeDescription = convertedRank.simpleDescription()
 26             print(threeDescription)   // 3
 27         }
 28         
 29         // 2. 
 30         let hearts = Suit.hearts
 31         let heartedDescription = hearts.simpleDescription()
 32         print("heartedDescription = (heartedDescription)")
 33         
 34         // 3.
 35         let success = ServerResponse.result("6:00 am", "8:09 pm")
 36         let failure = ServerResponse.failure("Out of cheese.")
 37         
 38         switch success {
 39         case let .result(sunrise, sunset):
 40             print("Sunrise is at (sunrise) and sunset is at (sunset).")
 41         case let .failure(message):
 42             print("Failure...  (message)")
 43             
 44         }
 45         // 4.结构体
 46         let structVar = Card(rank: .ace, suit: .hearts)
 47         print(structVar.simpleDescription())
 48 
 49     }
 50     
 51     // 定义枚举
 52     enum Rank: Int {
 53         case ace = 1
 54         case two, three, four,five, six, seven, eight, nine, ten
 55         case jack, queen, king
 56         func simpleDescription() -> String {
 57             
 58             switch self {
 59                 
 60             case .ace:
 61                 return "ace"
 62             case .jack:
 63                 return "jack"
 64             case .queen:
 65                 return "queen"
 66             case .king:
 67                 return "king"
 68             default:
 69                 return String(self.rawValue)
 70             }
 71         }
 72     }
 73     // 定义枚举
 74     enum Suit {
 75         case spades, hearts, diamonds, clubs
 76         func simpleDescription() -> String {
 77             switch self {
 78             case .spades:
 79                 return "spades"
 80             case .hearts:
 81                 return "hearts"
 82             case .diamonds:
 83                 return "diamonds"
 84             case .clubs:
 85                 return "clubs"
 86             }
 87         }
 88     }
 89     
 90     // 定义枚举元组
 91     enum ServerResponse {
 92         case result(String, String)
 93         case failure(String)
 94     }
 95     
 96     // 定义结构体
 97     struct Card {
 98         var rank: Rank
 99         var suit: Suit
100         func simpleDescription() -> String {
101             
102             return "The (rank.simpleDescription()) of (suit.simpleDescription())"
103         }
104     }
105 }