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@Keiji_otsubo(Keiji Otsubo)

コレクション変数に値があるかを確認する

Last updated at Posted at 2024-06-05

Summer　24 で変わった

image.png

以前の方法

numは数値型の変数、Stringsはテキスト型のコレクション変数
ポイントは演算子を割り当てで次の数と一致するにすること

コレクション変数がnullのときにはnumは0になっている

image.png

image.png

割り当ての前にコレクション変数に値を追加した場合

image.png

image.png

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