func DownloadFile filepath url string error out err os Create filepath

func DownloadFile(filepath, url string) error {
    out, err := os.Create(filepath)
    if (err != nil) {
        return err
    }
    defer out.Close()
    
    resp, err := http.Get(url)
    if (err != nil) {
        return err
    }
    defer resp.Body.Close()

    _, err = io.Copy(out, resp.Body)
    if (err != nil) {
        return err
    }
    return nil
}