Swift 数组、字典

 1 import Foundation
 2 
 3 // 数组
 4 var arr = ["Hello","jinapangpang",100,2.3]
 5 var arr1 = []
 6 print(arr)
 7 
 8 // 字典
 9 var dict = ["name":"jinpangpang","age":"16"]
10 // 添加新项
11 dict["sex"]="Female"
12 print(dict)
13 print(dict["name"])
14 
15 /* 输出结果如下
16 [Hello, jinapangpang, 100, 2.3]
17 ["age": "16", "sex": "Female", "name": "jinpangpang"]
18 Optional("jinpangpang")
19 Hello, World!
20 */