golang settings annotation

In golang, comments are one of the very important code features. It can help programmers understand the code better, and it can also make it easier for others to read and understand the code. In this article, we will explore how to add annotations in golang.

In golang, comments can be divided into two types: single-line comments and multi-line comments. Single-line comments are usually used to describe some simple code, while multi-line comments are usually used to describe some complex code.

Single-line comments start with double slashes (//). This type of comment is only valid in one line. For example:

//这是一个单行注释
var name string = "张三"

In the above code, the content after the double slash is the content of the comment.

Multi-line comments begin and end with a slash asterisk (/ ... /). This type of comment can be used for multi-line or single-line comments, depending on the content of the comment. For example:

/*
这是一个多行注释
可以有很多行
*/
var age int = 18

In the above code, the content after the slash asterisk is the content of the comment and can span multiple lines.

In addition to the above two comments, special comments can also be used. Special comments are more powerful than ordinary comments and can generate documentation in godoc.

Special comments start with a double slash followed by a special character space (//...). For example:

// Package main ...
package main

// Add adds two integers
func Add(x int, y int) int {
    return x + y
}

// Person represents a person
type Person struct {
    Name string
    Age int
}

In the above code, we use three special comments:

• Package: used to describe the function and name of the package, used when generating package documents.
• Function: used to describe the function and parameters, used when generating function documents.
• Type: Used to describe the role and fields of the type, used when generating type documents.

Using special comments can help us better understand the code, and can also generate documentation for our code so that others can view and use it.

In short, using comments in golang is a good habit, it can make the code more readable and maintainable. Not only that, but it also makes it easier for others to understand and use the code, especially when special comments are used. Therefore, adding comments to the code is a very recommended thing.

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