在 Go 中为 IO 操作添加帮助程序是不是不好的做法？

Question

我来自C#背景，并使用IO方法，如和来自命名空间。我有点惊讶地发现Go没有这些IO操作的便利功能。为了避免代码重复，我编写了以下帮助程序。有什么理由不这样做吗？File.ReadAllLinesFile.WriteAllLinesSystem.IO// WriteBytes writes the passed in bytes to the specified file. Before writing,// if the file already exists, deletes all of its content; otherwise, creates// the file.func WriteBytes(filepath string, bytes []byte) (err error) {    file, err := os.Create(filepath)    if err != nil {        return err    }    defer closeWithErrorPropagation(file, &err)    _, err = file.Write(bytes)    if err != nil {        return err    }    return err}// WriteString writes the passed in sting to the specified file. Before writing,// if the file already exists, deletes all of its content; otherwise, creates// the file.func WriteString(filepath string, text string) (err error) {    file, err := os.Create(filepath)    if err != nil {        return err    }    defer closeWithErrorPropagation(file, &err)    _, err = file.WriteString(text)    if err != nil {        return err    }    return err}// WriteLines writes the passed in lines to the specified file. Before writing,// if the file already exists, deletes all of its content; otherwise, creates// the file.func WriteLines(filepath string, lines []string) (err error) {    file, err := os.Create(filepath)    if err != nil {        return err    }    defer closeWithErrorPropagation(file, &err)    for _, line := range lines {        _, err := file.WriteString(fmt.Sprintln(line))        if err != nil {            return err        }    }    return err}func closeWithErrorPropagation(c io.Closer, err *error) {    if closerErr := c.Close(); closerErr != nil && *err == nil { // Only propagate the closer error if there isn't already an earlier error.        *err = closerErr    }}

Answer 1

操作系统。写文件可以处理 和 函数的等效功能：WriteBytesWriteString




// func WriteBytes(filepath string, bytes []byte) (err error)

err = os.WriteFile("testdata/hello", []byte("Hello, Gophers!"), 0666)

// func WriteString(filepath string, text string) (err error)

text := "Hello, Gophers!"

err = os.WriteFile("testdata/hello", []byte(text), 0666)

并与字符串组合。加盟可以处理：WriteLines




//func WriteLines(filepath string, lines []string) (err error)

lines := []string{"hello", "gophers!"}

err = os.WriteFile("testdata/hello", []byte(strings.Join(lines, "\n")), 0666)