[ios] swift 체험하기 #9 딕셔너리

import UIKit

 

var str = "Hello, playground"

 

var arrStr = ["one", "two"]

//array - ordering

 

var dicStr = Dictionary<String, String>()

 

dicStr["one"] = "first"

dicStr["two"] = "second"

dicStr["three"] = "third"

 

print(dicStr)

//like this '["one": "first", "two": "second", "three": "third"]'? yes or no

//dictionary - no ordering

 

var dicStr2 = [String:String]()

 

dicStr2["one"] = "first"

dicStr2["two"] = "second"

dicStr2["three"] = "third"

 

print(dicStr2)

 

dicStr["one"] = nil

print(dicStr)

 

dicStr2.removeAll()

print(dicStr2)