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本系列编号基本对应stanford CS193P的课程编号，可能有一两节课的误差：比如我标（1）就对应Lecture 1，但有时我做得快了就变成(1)对应lecture 1的全部和lecture 2的一部分。
前言：
我没学过OC，想学swift，可是网上只有教swift基本语法和写命令行程序的初级教程。
所以我只好拿个OC的教程，一边学swift，一边把OC的教程里的代码改成swift的，我想改完了之后应该就等于看了swift的教程了吧。
正文：
本文包括两个类，Card和Deck，以及一个单元测试类。写完之后的感觉：原来的教程教OC语法的部分看得我睡着了，而直接用swift写极简单。
具体值得记录的点有：
1.swift没有自动类型转换，只有类型推断，在arc4random % count 的时候无法自动转换类型。所以我加了个强制类型转换。
2.我debug测试类的时候发现xcode里显示不出我往deck.cards里插入的card，显示为invalid，但实际上是正确的。可能和我用的xcode6还是beta1有关。
3.drawRandomCard 的时候一开始我先做了remove，后做return，结果已经被remove掉的元素无法return。后加了个中间变量先暂存了一下要return的card。
4.感觉原来的OC语法比swift复杂很多。
5.感觉MVC部分CS193P的老头讲得挺好的。
代码：
首先是测试类：
1 // 2 // CardGameTests.swift 3 // CardGameTests 4 // 5 // Created by colin.zt on 14-6-6. 6 // Copyright (c) 2014年 Ting. All rights reserved. 7 // 8 9 import XCTest 10 11 class CardGameTests: XCTestCase { 12 13 override func setUp() { 14 super.setUp() 15 // Put setup code here. This method is called before the invocation of each test method in the class. 16 } 17 18 override func tearDown() { 19 // Put teardown code here. This method is called after the invocation of each test method in the class. 20 super.tearDown() 21 } 22 23 func testCard() { 24 // This is an example of a functional test case. 25 // XCTAssert(true, "Pass") 26 var a: Card = Card() 27 var b: Card = Card() 28 a.contents = "test card a" 29 b.contents = "test card b" 30 var cards: Card[] = [a,b] 31 var result = a.match(cards) 32 // println(a.contents) 33 XCTAssert(result == 1, "Pass") 34 } 35 36 func testDeck() { 37 38 var deck_a:Deck = Deck() 39 40 var card_a:Card = Card() 41 var card_b:Card = Card() 42 var card_c:Card = Card() 43 44 card_a.contents = "card a" 45 card_b.contents = "card b" 46 card_c.contents = "card c" 47 48 deck_a.addCard(card_a) 49 pirnt_all_cards_left(deck_a) 50 XCTAssert(deck_a.cards[0].contents == "card a", "Pass") 51 52 deck_a.addCard(card_b) 53 pirnt_all_cards_left(deck_a) 54 XCTAssert(deck_a.cards[0].contents == "card a", "Pass") 55 XCTAssert(deck_a.cards[1].contents == "card b", "Pass") 56 57 deck_a.addCard(card_c,atTop:true) 58 pirnt_all_cards_left(deck_a) 59 XCTAssert(deck_a.cards[0].contents == "card c", "Pass") 60 XCTAssert(deck_a.cards[1].contents == "card a", "Pass") 61 XCTAssert(deck_a.cards[2].contents == "card b", "Pass") 62 63 var random_card: Card = deck_a.drawRandomCard() 64 println("Now draw this random card:") 65 println(random_card.contents) 66 pirnt_all_cards_left(deck_a) 67 XCTAssert(random_card.match(deck_a.cards) == 0, "Pass") 68 XCTAssert(deck_a.cards.count == 2) 69 70 var random_card_2: Card = deck_a.drawRandomCard() 71 println("Now draw this random card_2:") 72 println(random_card_2.contents) 73 pirnt_all_cards_left(deck_a) 74 XCTAssert(random_card_2.match(deck_a.cards) == 0, "Pass") 75 XCTAssert(deck_a.cards.count == 1) 76 } 77 78 func pirnt_all_cards_left(deck:Deck){ 79 println("_______________________________________") 80 println("Now these cards in deck") 81 for card in deck.cards{ 82 println(card.contents) 83 } 84 println("_______________________________________") 85 } 86 87 func testPerformanceExample() { 88 // This is an example of a performance test case. 89 self.measureBlock() { 90 // Put the code you want to measure the time of here. 91 } 92 } 93 94 }
然后是Card类
1 // 2 // Card.swift 3 // CardGame 4 // 5 // Created by colin.zt on 14-10-18. 6 // Copyright (c) 2014年 Ting. All rights reserved. 7 // 8 9 import UIKit 10 11 class Card: NSObject { 12 13 init(){} //empty init method 14 var contents: String = "" //give it a default value 15 var chosen: Bool = false 16 var matched: Bool = false 17 18 //check if some card mathes some cards 19 func match(cards: Card[])->Int{ 20 var score = 0 21 for card in cards{ 22 if card.contents == self.contents 23 { 24 score = 1 25 } 26 } 27 return score 28 } 29 30 31 }
最后是Deck类
1 // 2 // Deck.swift 3 // CardGame 4 // 5 // Created by colin.zt on 14-10-18. 6 // Copyright (c) 2014年 Ting. All rights reserved. 7 // 8 9 import UIKit 10 11 class Deck: NSObject { 12 13 init(){} //init 14 var cards: Card[] = [] //a deck has an array of cards, empty by default 15 16 //add a card into this deck‘s cards array 17 func addCard(card: Card){ 18 self.addCard(card,atTop:false) 19 } 20 21 //add a card into this decks‘s cards array‘s top, first element 22 func addCard(card:Card,atTop:Bool){ 23 if atTop { 24 cards.insert(card, atIndex: 0) 25 } 26 else{ 27 cards.append(card) 28 } 29 } 30 31 //draw a card from the deck randomly, it removes the card 32 func drawRandomCard()->Card{ 33 var index = Int(arc4random()) % self.cards.count 34 var random_card:Card = cards[index] 35 cards.removeAtIndex(index) 36 return random_card 37 } 38 }
用swift重写stanford CS193P的纸牌游戏 （1）- Card 和Deck
标签：style blog http color io os ar for sp
原文地址：http://www.cnblogs.com/sdet/p/4032742.html
