回答編集履歴
1
補足
test
CHANGED
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@@ -27,3 +27,21 @@
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[https://firebase.google.com/docs/auth/ios/manage-users?hl=ja#get_the_currently_signed-in_user](https://firebase.google.com/docs/auth/ios/manage-users?hl=ja#get_the_currently_signed-in_user)
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##### 補足
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guardを使っても良いと思います。
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``` Swift
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guard let currentUser = Auth.auth().currentUser else {
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return
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}
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```
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