1、乙個陣列只能儲存特定型別的資料；
2、所儲存的資料不一定是乙個類的物件，可以是基礎資料型別；
var array = ["a","b","c"] //["a", "b", "c"]
var array2:[string] = ["a","b","c"] //["a", "b", "c"]
var array3:array= ["a","b","c"] //["a", "b", "c"]
array[0] = "aa" //"aa"
array //["aa", "b", "c"]
var array4 = [int]() //
var array5 = array() //
var array6:[int] = //
array = [string]() //清空陣列
array
array6 = [int](repeatelement(0, count: 10)) //[0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
var array7 = [2,3,4]
var array8 = array6 + array7 //兩個陣列合併 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 4]
var array = ["a","b","c"]
array.count //3
array.isempty //false
array += ["d","e"] //["a", "b", "c", "#", "d", "e"]
array.insert("hello", at: 0) //在陣列位置上插入 ["hello", "a", "b", "c", "#", "d", "e"]
array.remove(at: 0) //"hello" 刪除的元素
array.removelast() //"e" 刪除最後乙個元素
array[0] = "aa"
array //["aa", "b", "c", "#", "d"]
array[2...4] = ["cc","dd","ee"] //批量修改,陣列賦給陣列
array //["aa", "b", "cc", "dd", "ee"]
//遍歷陣列-1
for index in 0..1、字典儲存的資料是鍵和值的資料對
2、所儲存的資料中，鍵和值可以是任意資料型別
3、乙個字典只能儲存固定一種鍵和值的資料型別搭配
//隱式宣告
var dict = [1:"a",2:"b",3:"c"]
var site = ["search":"google","web":"mooc"]
//顯式宣告
var dict2:dictionary= [1:"a",2:"b",3:"c"]
var site2:dictionary= ["search":"google","web":"mooc"]
var dict3 = dictionary() //宣告乙個空字典
dict = dictionary() //清空字典
dict = [:] //清空字典
var dict = [1:"a",2:"b",3:"c"]
var site = ["search":"google","web":"mooc"]
dict.count //返回資料對數
dict.isempty //是否空
//訪問鍵值
dict[1] //"a"
site["search"] //"google"
dict[4] //nil
dict[0] = "0" //"0"
"seo:"+site["search"]! //"seo:google"
site.updatevalue("imaginecode", forkey: "web")
site //["web": "imaginecode", "search": "google"]
//遍歷key,value
for (key,value) in site
//遍歷key
for key in site.keys
//遍歷val
for val in site.values
array(site.keys) //強制型別轉換 ["web", "search"]
1、列表
示例: uikit
import uikit
let colors = [
"blue":(red:93,green:138,blue:168),
"sweet":(red:254,green:111,blue:94),
"yellow":(red:255,green:239,blue:0),
"orange":(red:255,green:140,blue:0),
"violet":(red:143,green:0,blue:255),
"fern":(red:113,green:188,blue:120),
"gamboge":(red:228,green:155,blue:15),
"cerise":(red:244,green:0,blue:161),
"icterine":(red:252,green:247,blue:94),
"jam":(red:165,green:11,blue:94)
]//var backview = uiview(frame: cgrect(x:0, y:0, width: 320, height:colors.count * 50)
var backview = uiview(frame:cgrect(x: 0.0, y: 0.0, width: 320.0, height: cgfloat(colors.count * 50)) )
backview.backgroundcolor = uicolor.black
var index = 0
for (colorname,rgbtuple) in colors
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