Method apply

src/danfojs-base/core/series.ts:1050–1069

(callable: (value: any) => any, options?: { inplace?: boolean })

     */
    apply(callable: (value: any) => any, options?: { inplace?: boolean }): Series
    apply(callable: (value: any) => any, options?: { inplace?: boolean }): Series | void {
        const { inplace } = { inplace: false, ...options }

        const isCallable = utils.isFunction(callable);
        if (!isCallable) {
            throw new Error("Param Error: callable must be a function");
        }

        const data = this.values.map((val) => {
            return callable(val);
        });

        if (inplace) {
            this.$setValues(data)
        } else {
            const sf = this.copy();
            sf.$setValues(data)
            return sf;
        }
    }

    /**
     * Returns a Series with only the unique value(s) in the original Series