swift Dictionary

 1. 定义固定格式的字典
// dict1的所有“键值”类型一致(都是字符串)
var dict1 = ["name": "mary", "age": "18"]

或者
 var dataSource = [[String:String]()]

 dataSource = [
                  ["type":"no","name":"张三","sex":"男","icon":"my_def_photo","birthday":"2017-10-11"],
                  ["type":"no","name":"李四","sex":"男","icon":"my_def_photo","birthday":"2011-12-30"],
                  ["type":"no","name":"王五","sex":"女","icon":"my_def_photo","birthday":"2014-9-10"],
                  ["type":"no","name":"JIM","sex":"赵六","icon":"my_def_photo","birthday":"2008-10-1"]]

修改元素

dict1["name"] = "rose"//方法一
dict1.updateValue("rose", forKey: "name")//方法二

获取数据

let type = dict["type"]
或
let dict:Dictionary = dataSource[1]
let type = dict["type"]

删除某一个键值

dict1.removeValueForKey("type")

添加新的键值对

dict1["height"] = "1.65M"