回答編集履歴
1
微修正
test
CHANGED
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@@ -1,4 +1,4 @@
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1
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-
std::ostream& operator<<(std::ostream& stream, const Date
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1
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+
std::ostream& operator<<(std::ostream& stream, const Date& data)
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2
2
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3
3
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4
4
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