回答編集履歴
2
コードの修正
answer
CHANGED
|
@@ -1,71 +1,66 @@
|
|
|
1
1
|
Swiftは普段あまり触らないので、話半分くらいに見ていただきたいですが……
|
|
2
2
|
|
|
3
|
+
Dec 2, 2019 9:55pm追記: Macを触れる環境に来たので修正しました
|
|
4
|
+
|
|
3
5
|
```swift
|
|
6
|
+
|
|
4
7
|
// MARK: -
|
|
5
8
|
class Car {
|
|
6
|
-
|
|
9
|
+
var name: String
|
|
7
|
-
|
|
10
|
+
var wheelsQty: Int
|
|
8
11
|
|
|
9
|
-
|
|
12
|
+
init(name: String) {
|
|
10
|
-
|
|
13
|
+
self.name = name
|
|
11
|
-
|
|
14
|
+
self.wheelsQty = 4
|
|
12
|
-
|
|
15
|
+
}
|
|
13
|
-
|
|
16
|
+
|
|
14
|
-
|
|
17
|
+
func run() {
|
|
15
|
-
|
|
18
|
+
print("Go ahead (self.name), zoom-zoom!")
|
|
16
|
-
|
|
19
|
+
}
|
|
17
20
|
}
|
|
18
21
|
|
|
19
22
|
// MARK: -
|
|
20
23
|
class Bike: Car {
|
|
21
|
-
|
|
24
|
+
var hasSidecar: Bool
|
|
22
|
-
|
|
25
|
+
|
|
23
|
-
|
|
26
|
+
init(name: String, hasSidecar: Bool) {
|
|
24
|
-
self = super.init(name: name)
|
|
25
|
-
|
|
27
|
+
self.hasSidecar = hasSidecar
|
|
28
|
+
super.init(name: name)
|
|
26
|
-
|
|
29
|
+
self.wheelsQty = 2
|
|
27
|
-
|
|
30
|
+
}
|
|
28
31
|
}
|
|
29
32
|
|
|
30
33
|
// MARK: -
|
|
31
34
|
class Truck: Car {
|
|
32
|
-
|
|
35
|
+
var specialSigns: Array<String>
|
|
33
|
-
|
|
36
|
+
|
|
34
|
-
|
|
37
|
+
init(name: String, specialSigns: Array<String>) {
|
|
35
|
-
self = super.init(name: name)
|
|
36
|
-
|
|
38
|
+
self.specialSigns = specialSigns
|
|
39
|
+
super.init(name: name)
|
|
37
|
-
|
|
40
|
+
}
|
|
38
|
-
|
|
41
|
+
|
|
39
|
-
|
|
42
|
+
override func run() {
|
|
40
|
-
|
|
43
|
+
print("Vrrr, Vrrrr, Vrrrrrrom!!!!")
|
|
41
|
-
|
|
44
|
+
}
|
|
42
45
|
}
|
|
43
46
|
|
|
44
47
|
// MARK: -
|
|
45
|
-
class
|
|
48
|
+
class ViewController: UIViewController {
|
|
46
|
-
let touring = new Bike(name: "Touring", hasSidecar: true)
|
|
47
|
-
let hayabusa: Car = new Bike(name: "Hayabusa", hasSidecar: true)
|
|
48
|
-
let canter = new Truck(name: "CANTER", specialSigns: ["危", "毒"])
|
|
49
|
-
let elf: Car = new Truck(name: "ELF", specialSigns: [])
|
|
50
|
-
var myFavoriteCar = some Car
|
|
51
|
-
|
|
52
|
-
|
|
49
|
+
required init?(coder: NSCoder) {
|
|
53
|
-
|
|
50
|
+
super.init(coder: coder)
|
|
54
|
-
|
|
51
|
+
}
|
|
55
52
|
|
|
56
|
-
touring
|
|
53
|
+
let touring = Bike(name: "Touring", hasSidecar: true)
|
|
57
|
-
hayabusa
|
|
54
|
+
let hayabusa: Car = Bike(name: "Hayabusa", hasSidecar: true)
|
|
58
|
-
canter
|
|
55
|
+
let canter = Truck(name: "CANTER", specialSigns: ["危", "毒"])
|
|
59
|
-
elf
|
|
56
|
+
let elf: Car = Truck(name: "ELF", specialSigns: [])
|
|
60
57
|
|
|
61
|
-
|
|
58
|
+
override func viewDidLoad() {
|
|
59
|
+
print("(touring.hasSidecar)") // -> true
|
|
60
|
+
print("(hayabusa.hasSidecar)") // -> ERROR
|
|
61
|
+
|
|
62
|
-
|
|
62
|
+
print("(canter.specialSigns)") // -> ["危", "毒"]
|
|
63
|
-
self.myFavoriteCar = hayabusa
|
|
64
|
-
|
|
63
|
+
print("(elf.specialSigns)") // -> ERROR
|
|
65
|
-
|
|
64
|
+
}
|
|
66
|
-
|
|
67
|
-
func printCurrentFavorite() {
|
|
68
|
-
print("My favorite is (self.myFavoriteCar.name), this is a (type(of: self.myFavoriteCar))")
|
|
69
|
-
}
|
|
70
65
|
}
|
|
71
66
|
```
|
1
typo修正とコメント追加
answer
CHANGED
|
@@ -1,3 +1,5 @@
|
|
|
1
|
+
Swiftは普段あまり触らないので、話半分くらいに見ていただきたいですが……
|
|
2
|
+
|
|
1
3
|
```swift
|
|
2
4
|
// MARK: -
|
|
3
5
|
class Car {
|
|
@@ -45,7 +47,7 @@
|
|
|
45
47
|
let hayabusa: Car = new Bike(name: "Hayabusa", hasSidecar: true)
|
|
46
48
|
let canter = new Truck(name: "CANTER", specialSigns: ["危", "毒"])
|
|
47
49
|
let elf: Car = new Truck(name: "ELF", specialSigns: [])
|
|
48
|
-
var myFavoriteCar
|
|
50
|
+
var myFavoriteCar = some Car
|
|
49
51
|
|
|
50
52
|
override func viewDidLoad() {
|
|
51
53
|
print("(touring.hasSidecar)") // -> true
|
|
@@ -63,7 +65,7 @@
|
|
|
63
65
|
}
|
|
64
66
|
|
|
65
67
|
func printCurrentFavorite() {
|
|
66
|
-
print("My favorite is (self.myFavoriteCar.name), this is a (type(of:
|
|
68
|
+
print("My favorite is (self.myFavoriteCar.name), this is a (type(of: self.myFavoriteCar))")
|
|
67
69
|
}
|
|
68
70
|
}
|
|
69
71
|
```
|