array = ["A","B","C"] //["A", "B", "C"]
var array2:[String] = ["A","B","C"] //["A", "B", "C"]
var array3:...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 //两个数组合并 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 4]
数组基本操作
var array = ["...A","B","C"]
array.count //3
array.isEmpty //false
array.append("#") //["A", "B", "C", "#"]
array +..."]
//显式声明
var dict2:Dictionary = [1:"a",2:"b",3:"c"]
var site2:Dictionary<String,String
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