1 //元组  2 let student = (18, 70.0, "王恒")  3   4 let student1: (Int,Double,String) = (22, 65.0, "老王")  5 print(student1)  6   7 let 老张 = (age: 24, height: 169.0, sex: "泰国回来的,未知")  8 print(老张.sex)  9  10 let 同桌 = (age: 38, height: 150.0, sex: "母") 11 print(同桌.age) 12  13 //数组 14 var array: Array = [1, 2, 3, 4, 5] 15 var array1: Array = [1, "2", "sdg"] 16 //定义一个int类型的数组 17 var intArray: Array
     
       = [1, 2, 3, 4] 18 var intArray1: [Int] = [1, 2, 3] 19 //定义字符串类型数组 20 var stringArray: [String] = ["张三", "李四", "王五"] 21 //定义一个Int类型的空数组 22 var intArray2 = [Int]() 23  24 // 数组的增删改查 25 //增 26 var arrayValue = [1, 2, 3, 4, 5] 27 arrayValue += arrayValue[0...2] 28 print(arrayValue) 29  30 //添加一个值到数组的最后一位 31 arrayValue.append(100) 32 print(arrayValue) 33  34 var arrayValue1 = [10, 11, 12] 35 //在数组的最后添加一个数组 36 arrayValue.appendContentsOf(arrayValue1) 37 print(arrayValue) 38  39 //插入一个数据到某个位置 40 arrayValue.insert(101, atIndex: 0) 41 print(arrayValue) 42  43 //把一个数组插入到某一个位置 44 arrayValue.insertContentsOf(arrayValue1, at: 0) 45 print(arrayValue) 46  47  48  49 //删 50 //删除数组的第一个元素 51 arrayValue.removeFirst() 52 print(arrayValue) 53  54 //删除最后一个元素 55 arrayValue.removeLast() 56 print(arrayValue) 57  58 //根据下标删除 59 arrayValue.removeAtIndex(2) 60 print(arrayValue) 61  62 //删除一个区间 63 arrayValue.removeRange(0...2) 64 print(arrayValue) 65  66 //删除所有的元素 67 arrayValue.removeAll() 68 print(arrayValue) 69  70 //删除完数据后保不保存存储空间 true:保存  false:不保存 71 arrayValue.removeAll(keepCapacity: true) 72 print(arrayValue.capacity) 73  74  75 //字典 76 let dicValue: Dictionary = [1 : "1", "2" : 2] 77  78 let dicValue1: Dictionary
      
        = ["1" : "1", "2" : "2"] 79  80 var dicValue2: Dictionary
       
         = ["apple":"?", "cat":"?","dog":"?", "pig":"?", "zhangyu":"?"] 81 //如果字典里有对应的key,则修改其值,如果没有,则添加该键值对 82 dicValue2.updateValue("梨", forKey: "apple") 83 print(dicValue2) 84 dicValue2.updateValue("?", forKey: "banana") 85 print(dicValue2) 86 //和上面效果一样 87 dicValue2["apple"] = "?" 88 dicValue2["sheep"] = "?" 89 print(dicValue2) 90  91 //删除 92 dicValue2.removeValueForKey("sheep") 93 print(dicValue2) 94 //删除全部 95 //dicValue2.removeAll() 96 //print(dicValue2) 97  98 //遍历所有的key 99 for key in dicValue2.keys100 {101     print(key)102 }103 104 //遍历所有的value105 for var value in dicValue2.values106 {107     print(value)108 }109 110 //遍历键值对111 for (key, value) in dicValue2112 {113     print("\(key) -> \(value)")114 }115 116 //函数117 /*118 *   函数书写格式119 *   func 函数名 (参数名: 参数类型,参数名: 参数类型...) -> 返回值类型120     {121         函数体122     }123 */124 125 // 无参无返回值类型函数126 func sayHello()// -> Void127 {128     print("hello")129 }130 // 函数调用131 sayHello()132 133 // 有一个参数,无返回值的函数134 func sayIntValue(a: Int)135 {136     print(a)137 }138 //调用139 sayIntValue(100);140 141 // 有参数有返回值的函数142 func backSum(a: Int, b: Int) -> Int143 {144     return a + b145 }146 print(backSum(10, b: 10))147 148 func backPoint(point1 point1:(Int,Int),point2:(Int,Int)) -> (Int,Int)149 {150     return (point2.0 - point1.0,point2.1 - point1.1)151 }152 let point1 = (2, 3)153 let point2 = (10, 10)154 let point3 = backPoint(point1: point1, point2: point2)155 print(point3)156 157 //函数嵌套158 func sayIntNumber(a: Int)159 {160     func sayIntValue()161     {162         print(a)163     }164     sayIntValue()165 }166 sayIntNumber(101)167 168 // 交互俩个变量的值,必须用inout关键字,传值时,参数前必须加"&"169 func changeValue(inout a: Int, inout b: Int)170 {171     var c = 0172     c = a173     a = b174     b = c175 }176 var aValue = 10177 var bValue = 20178 changeValue(&aValue, b: &bValue)179 print(aValue)180 181 182 // 闭包183 /*184 *   闭包书写规范185 *   {(参数名: 参数类型, 参数名: 参数类型) -> 返回值类型 int 实现体186 187 *   }188 */189 190 var block: (Int, Int) -> Int = {191     (a: Int, b: Int) -> Int in192     return a + b193 }194 195 // 闭包调用196 let block1 = block(10, 10)197 print(block1)198 199 //枚举200 //只有int类型的枚举才有递增201 enum Direction : Int202 {203     case east = 10204     case south = 20205     case west206     case north207 }208 let direction1: Direction = Direction.east209 //rawValue对象对应的值210 print(direction1.rawValue)211 //打印对象的哈希值212 print(direction1.hashValue)213 print(Direction.south.hashValue)214 215 enum Student216 {217     case description(Int, Double, String)218     case weight219 }220 let 老司机 = Student.description(24, 172, "未知")221 print(老司机)222 223 switch 老司机224 {225 case Student.description(var age, var height, var sex):226     print("\(age),\(height),\(sex)")227 default:228     print("")229 }