Function sumBy

  • sumBy(collection: AnyDict[], field: string): number

  • Sums the values of the specified field in the specified collection of objects.

    Parameters

    • collection: AnyDict[]

      Collection of objects containing a field with a number value.

    • field: string

      Field to get sum for.

    Returns number

    Sum of the specified field from the specified collection.

    Throws

    TypeError if any of the values in the collection are not valid numbers.

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