How to use method annotations in Golang

In Golang, comments are a very important form of code documentation, providing detailed instructions and explanations to others or yourself when looking at the code in the future. Comments help us understand the code quickly and understand exactly its purpose and function, especially when we need to modify or extend the code.

This article will introduce how to use method annotations in Golang. Method annotations are comments for functions or methods. There are many ways to comment methods in Golang. We will introduce them as follows:

Single-line comments

Use the "//" symbol and add the "//" symbol before the comment statement. Single line comments can be generated.

Sample code:

package main

import "fmt"

// 计算1+2的结果
func main() {
    sum := 1 + 2
    fmt.Println(sum) // 打印结果
}

In the above code, in the function main, we added a single-line comment with the "//" symbol, and the comment statement is "calculate the result of 1 2" , you can clearly understand the purpose of the code.

Multi-line comments

Use the "/.../" symbol, add the "/" symbol before the comment statement, and add the "/" symbol after the comment statement Add the "

/" symbol to generate multi-line comments.

Sample code:

package main

import "fmt"

/*
计算两个整数的和
输入参数：x 整数
输入参数：y 整数
输出参数：整数类型的和
*/
func add(x int, y int) int {
    return x + y
}

func main() {
    sum := add(1, 2)
    fmt.Println(sum)
}

In the above code, in the function add, we use multi-line comments to explain the input and output parameters of the function, as well as the function of the function.

In the form of function comments

In the first line of the function, use the "//" symbol to add the function description.

Sample code:

package main

import "fmt"

func main() {
    sum := add(1, 2)
    fmt.Println(sum)
}

// 计算两个整数的和
// x: 整数类型的值
// y: 整数类型的值
// 返回值: 整数类型的和
func add(x int, y int) int {
    return x + y
}

In the above code, in the first line of function add, we use the "//" symbol to illustrate the function and input and output parameters of the function, which can improve Code readability and understandability.

Summary

Golang comments are an important element in writing high-quality code. Appropriate comments can enhance the readability and maintainability of the code, and also facilitate readers' understanding and code modification. I hope this article can give readers some help and write better Golang code. ###

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