nest_dictionary_and_array_for_swift

nest_dictionary_and_array_for_swift.swift

// ①
enum itemLabel:String {
    case name = "名前"
    case price = "値段"
}

enum sectionLabel:String {
    case vegetable = "野菜"
    case meat = "肉"
}

// ②
// Dictionary型の配列をArraysで管理
var item0_0 = [itemLabel.name.rawValue:"かぼちゃ",itemLabel.price.rawValue:100]
var item0_1 = [itemLabel.name.rawValue:"レタス",itemLabel.price.rawValue:100]
var data0 = [item0_0,item0_1]

var item1_0 = [itemLabel.name.rawValue:"豚肉",itemLabel.price.rawValue:100]
var item1_1 = [itemLabel.name.rawValue:"牛肉",itemLabel.price.rawValue:100]
var data1 = [item1_0,item1_1]

// ③
var section = [sectionLabel.vegetable.rawValue:data0,sectionLabel.meat.rawValue:data1]

// ④
print(section)                                       // ["肉": [["名前": 豚肉, "値段": 100], ["名前": 牛肉, "値段": 100]], "野菜": [["名前": かぼちゃ, "値段": 100], ["名前": レタス, "値段": 100]]]
print(section[sectionLabel.vegetable.rawValue]!)     // [["名前": かぼちゃ, "値段": 100], ["名前": レタス, "値段": 100]]
print(section[sectionLabel.vegetable.rawValue]![0])  // ["名前": かぼちゃ, "値段": 100]
print(section[sectionLabel.vegetable.rawValue]![0][itemLabel.name.rawValue]!,section[sectionLabel.vegetable.rawValue]![0][itemLabel.price.rawValue]!)  // かぼちゃ 100
print(section[sectionLabel.vegetable.rawValue]![1][itemLabel.name.rawValue]!,section[sectionLabel.vegetable.rawValue]![1][itemLabel.price.rawValue]!)  // レタス 100