Function applyFunc

src/danfojs-node/test/core/series.test.ts:895–897

(x: any)

        it("apply a function to a series element", function () {
            const sf = new Series([1, 2, 3, 4, 5, 6, 7, 8]);
            const applyFunc = (x: any) => {
                return x + x;
            };

            const rslt = [2, 4, 6, 8, 10, 12, 14, 16];
            assert.deepEqual((sf.apply(applyFunc)).values, rslt);