Function arraysGroupBy

  • arraysGroupBy<T, K>(arr: readonly T[], keyFn: (elem: T) => K): Map<K, T[]>

    Groups the elements of the given array by the key returned by the given key function.

    Type Parameters

    • T
    • K

    Parameters

    • arr: readonly T[]
    • keyFn: (elem: T) => K

    Returns Map<K, T[]>

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