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【TypeScript】配列から重複を排除する方法

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Setを使用する

  • Setとは、重複する値がないことを保証したコレクション

配列との違い

  • 順序をもたない
  • インデックスによるアクセスはできない

サンプルコード

const set = new Set([1, 2, 2, 3]);
console.log(set); // {1, 2, 3}
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