Suggestions on coding standards for Go language annotations in practice

Go language comment coding specification suggestions in practice

When writing Go language programs, good comment coding specifications are very important. Appropriate comments can help other developers understand the code logic more quickly and improve the readability and maintainability of the code. This article will introduce some Go language annotation coding standard recommendations applied in practice, and illustrate them with specific code examples.

1. Types of comments

In the Go language, there are two main ways of commenting: single-line comments and multi-line comments. Single-line comments start with //, and multi-line comments are wrapped with /* */. Single-line comments are suitable for adding a brief comment at the end of a line of code or above a line of code; while multi-line comments are suitable for describing an entire function, structure, or constant in detail.

2. Specifications for comment content

1. Add copyright statement and author information to each package:

   // Package main 实现了一个简单的Go程序.
   // 版权所有 © 2022 年 作者.
   package main

2. Function comments Should include function, parameter, return value description:

   // Add 实现了两个数的相加.
   // 参数 a: 第一个加数.
   // 参数 b: 第二个加数.
   // 返回值: 相加后的结果.
   func Add(a, b int) int {
    return a + b
   }

3. The structure comment should include the description and field description of the structure:

   // Person 结构体代表一个人.
   type Person struct {
    // Name 表示人的姓名.
    Name string
    // Age 表示人的年龄.
    Age int
   }

4. Constant Comments for variables and variables should explain their purpose and value range:

   const MaxValue = 100 // 最大值为100.
   var userName = "Alice" // 用户名为Alice.

5. Comments should be concise and clear, avoiding lengthy or irrelevant content.

3. The location and specification of comments

1. Each package, type, constant, variable, function, etc. should have comments.
2. Comments should be placed immediately above the corresponding code to keep the code clean and compact.
3. Comments should use concise and clear language and follow a unified style and format.

4. Implementation example of comments

The following is a complete Go language program that contains comments written according to the above specifications:

// Package main 实现了一个简单的Go程序.
// 版权所有 © 2022 年 作者.
package main

import "fmt"

// Add 实现了两个数的相加.
// 参数 a: 第一个加数.
// 参数 b: 第二个加数.
// 返回值: 相加后的结果.
func Add(a, b int) int {
    return a + b
}

// Person 结构体代表一个人.
type Person struct {
    // Name 表示人的姓名.
    Name string
    // Age 表示人的年龄.
    Age int
}

const MaxValue = 100 // 最大值为100.
var userName = "Alice" // 用户名为Alice.

func main() {
    fmt.Println(Add(10, 20))
}

By following the above The annotated coding standards suggest that we can write clearer and easier-to-understand code and improve code quality and maintainability in the practice of Go language. Hope the above content is helpful to you.

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