file/io.go
func Create(filename string, b []byte) (err error) {
	file, err := os.Create(filename)
	if err != nil {
		return err
	}

	_, err = file.Write(b)
	err2 := file.Close()
	if err2 != nil && err == nil {
		err = err2
	}
	return
}
func Create(filename string, b []byte) (err error) {
	file, err := os.Create(filename)
	if err != nil {
		return err
	}

	_, err = file.Write(b)
	err2 := file.Close()
	if err2 != nil && err == nil {
		err = err2
	}
	return
}
// Create creates a new file with b bytes.