Method sum

src/danfojs-base/core/series.ts:581–584

* Return the sum of the values in a series. * @example * ``` * const sf = new Series([1, 2, 3, 4, 5, 6]); * console.log(sf.sum()); * //output 21 * ```

()

      * ```
    */
    sum(): number {
        const values = this.$checkAndCleanValues(this.values as ArrayType1D, "sum")
        return values.reduce((sum, value) => sum + value, 0)
    }

    /**
       * Return number of non-null elements in a Series