golang function comment writing method

In the Go language, function annotations are a very important task, which can help developers understand the functions and usage of functions faster, and improve the readability and maintainability of the code. Here are some suggestions for writing golang function comments.

1. The location of function comments

In Go language, function comments should be located before the function definition and written using doc comment format, the format is as follows:

// 函数描述
// 参数1: 参数1描述
// 参数2: 参数2描述
// 返回值: 返回值描述
func funcName(param1 Type1, param2 Type2) (result1 Result1, result2 Result2) {
    // function body
}

Among them, parameter description and return value description are optional. If there are a large number of parameters or return values, it is recommended to use a separate line for parameter and return value comments.

2. How to write function description

Function description should be concise and to the point, accurately expressing the function and role of the function. Usually includes:

• Function name: A short and clear function name can make it easier for developers to quickly understand the function of the function.
• Function function: Explain the function of the function, usually including input parameters, output results and modification of status.
• Usage restrictions: Describe the usage restrictions of the function, such as preconditions that need attention, available input parameters, function restrictions, etc.

3. Writing method of parameter description

Parameter description should be clear and clear, specifically listing the name, type, function, default value and other information of each parameter. If there are too many parameters, it is recommended to write them on separate lines to maintain clear visibility.

For example:

// 进行字符串替换操作
// string: 原始字符串
// oldStr: 被替换的字符串
// newStr: 替换后的字符串
// n: 替换次数，默认为-1，表示全部替换
// 返回值: 返回替换后的字符串
func Replace(string string, oldStr string, newStr string, n int) string {
    // function body
}

4. How to write the return value description

The return value description should be clear and clear, listing the type, function and function of each return value meaning information. If there are many return values, it is recommended to write them in separate lines to keep them clear and readable.

For example:

// 计算两个数的和、差、积、商
// x: 第一个数
// y: 第二个数
// 返回值1: 两数之和
// 返回值2: 两数之差
// 返回值3: 两数之积
// 返回值4: 两数之商
func Calc(x int, y int) (int, int, int, float64) {
    // function body
}

In short, function comments are an important part of code readability and maintainability and should be taken seriously. The above are some suggestions on how to write golang function comments. I hope they can be helpful to you.

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