質問編集履歴
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test
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@@ -30,7 +30,27 @@
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```ここに言語名を入力
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vagrant@ubuntu-bionic:~/workspace_2/todo$ node
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例
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> const tasks = new Map();
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undefined
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> tasks.set('鉛筆を買う',false );
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Map { '鉛筆を買う' => false }
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> Array.from(tasks).filter((task) => { return task[1]});
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[]
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> Array.from(tasks).filter((task) => { return !task[1]});
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[ [ '鉛筆を買う', false ] ]
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```
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