feat(map-and-set): Map.groupBy静的メソッドの追加
#1751
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azu
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Map.groupByの追加Map.groupBy静的メソッドの追加
azu
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Jul 20, 2024
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概要
ES2024では、配列の要素をグループ分けしたマップを作成する
Map.groupBy静的メソッドが追加されています。Map.groupBy静的メソッドはObject.groupBy静的メソッドとよく似たメソッドです。Object.groupBy静的メソッドは配列からオブジェクトを作成するのに対して、Map.groupBy静的メソッドは配列からマップを作成します。Map.groupBy静的メソッドも元々は、Array.prototype.groupToMapメソッドという配列のメソッドとして提案されていましたが、Object.groupBy静的メソッドに合わせる形でMap.groupBy静的メソッドに変更されました。変更されたページ
変更内容
Map.groupBy静的メソッドの説明を追加関連
Object.groupBy静的メソッドを追加 #1749cc @koralle