Detailed explanation of the basic rules of golang method annotation

As the Go language becomes more and more popular, more and more people are starting to use it to develop various applications. Especially when it comes to building web applications, Go has become a very popular programming language due to its efficiency and simplicity. When writing code in Go, a very important best practice is to add comments to functions and methods. Method annotations not only help your code be easier to read and understand, but they also allow others to follow your code and start contributing to it more quickly. This article will introduce you to how to write good method comments.

Basic rules for method comments
In order to write good method comments, you need to understand some basic rules. These rules will ensure that your comments are clear, easy to understand, and can help your project be more stable.

1. Avoid using the first person
   Method comments should be written in the third person, not the first person. Method comments should highlight what the function or method does, not the author himself.
2. Describe what the function or method does
   Method comments should clearly describe what the function or method does. This is the first priority of what you are going to do. If you can describe it into one sentence, then that's what you should write.
3. Describe parameters in as much detail as possible
   Parameter comments should clearly describe the purpose of the parameters, the types they are expected to receive, and any constraints required on the parameters. This makes it easier for anyone who uses your code to understand your code and use it.
4. Use comments to explain code
   Use comments to explain any confusing or difficult-to-understand code. If you have some code that requires special explanation, then you should add comments near the code so that others can get a clearer understanding.
5. Provide a return value description
   You should provide information about the return value of a function or method in a comment. It describes not only the type of the return value, but also what the return value means, where that meaning comes from, and any other important details.

How to write good method comments
The following are specific guidelines for method comments that can help you write clear, easy-to-understand comments.

1. Start comment
   At the beginning of the comment, you should add a short title for your method or function so that people understand what it does. The title should be concise, clear, useful, and reflect the main purpose of the function or method.
2. Describe parameters
   Describe parameters in your comments to specify the parameter's name, type, and expected value range. This makes it easier for others to understand what parameters the function or method expects to receive, and how to use them.
3. Describe the return value of a function or method
   Describe the value returned by a function or method and its meaning. You should describe in detail what your code will return, and make sure the type of the return value matches your annotation. This can help your code be easier to understand.
4. Explain complex code
   If there are complex parts of your code, make sure to add comments next to the code. You should describe the purpose of your code and its solution to ensure others understand your code better.
5. Keep comments updated
   When modifying code, you need to make sure to update your comments to reflect the changes. Once the code becomes increasingly complex, the readability of the code becomes more important.

Conclusion
In Go language, method annotations are very important and valuable. Comments can help make your code easier to understand, keep your code more stable, and help others contribute to your project. Following the above rules and following the steps above to write comments will make your code easier to read and understand.

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