回答編集履歴
1
修正
test
CHANGED
|
@@ -10,7 +10,15 @@
|
|
|
10
10
|
|
|
11
11
|
|
|
12
12
|
|
|
13
|
+
// optinal
|
|
14
|
+
|
|
13
15
|
let array = datas.filter{ $0 as! Int as! Int == 0 }
|
|
16
|
+
|
|
17
|
+
|
|
18
|
+
|
|
19
|
+
// 非optinal
|
|
20
|
+
|
|
21
|
+
// let array = datas.filter{ $0 == 0 }
|
|
14
22
|
|
|
15
23
|
print(array.count)
|
|
16
24
|
|