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What
arr.flat
とarr.flat_map
を追加します。@(v: arr).flat(depth: num): arr
配列に含まれる配列を depth で指定した深さの階層まで結合した新しい配列を作成します。
depth には0以上の整数値を指定します。省略時は1になります。
@(v: arr).flat_map(func: @(item: value, index: num) { value }): arr
配列の各要素を func の返り値で置き換えた後、1階層平坦化した新しい配列を作成します。
func は非同期的に呼び出されます。
Why
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