Swift 数组、字典

import Foundation

// 数组
var arr = ["Hello","jinapangpang",100,2.3]
var arr1 = []
print(arr)

// 字典
var dict = ["name":"jinpangpang","age":"16"]
// 添加新项
dict["sex"]="Female"
print(dict)
print(dict["name"])

/* 输出结果如下
[Hello, jinapangpang, 100, 2.3]
["age": "16", "sex": "Female", "name": "jinpangpang"]
Optional("jinpangpang")
Hello, World!
*/