回答編集履歴
1
banana
test
CHANGED
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@@ -12,8 +12,32 @@
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12
12
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13
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]
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14
14
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15
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-
print(Array(a.keys)) //["apple", "orange"]
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15
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print(Array(a.keys)) //=> ["apple", "orange"]
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17
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print(a.keys.map {$0}) //["apple", "orange"]
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17
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print(a.keys.map {$0}) //=> ["apple", "orange"]
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```
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23
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# valueからkey取得
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24
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```swift
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28
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29
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let a = [
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30
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31
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"apple": 100,
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32
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33
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"orange": 200,
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34
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35
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"banana": 100,
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36
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]
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39
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print(Array(a.filter {$0.value == 100}.keys))
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40
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41
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//=> ["banana", "apple"]
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```
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