Focus on the use of Golang Template annotations

Golang is a statically strongly typed programming language with features such as high concurrency and automatic garbage collection. Templates in the Golang language are also a very important part because they are a way to combine data and HTML web content. When we use Golang Template, we often need to use comments to help us organize and debug our code, so this article will focus on the use of Golang Template comments.

1. Single-line comments

Single-line comments in Golang start with "//", followed by the content of the comment. In Golang Template, we can use single-line comments to add comments about specific lines of code in the template. For example:

{{/* 这是一个单行注释 */}}

2. Multi-line comments

Multi-line comments in Golang start with "/" and end with "/", with a middle Contains multiple annotations. In Golang Template, we can use multi-line comments to comment large sections of code in the template. For example:

{{/*
 这是一个
 多行注释
*/}}

3. Nested comments

In Golang Template, we can also use nested comments. Nested comments refer to adding a comment block within a comment block. For example:

{{/*
 {{/* 嵌套注释 */}} 
*/}}

4. Comments mixed with code

In templates, we can also embed code in comments. This situation is usually used when some debugging information needs to be printed in the template. For example:

{{/* 输出一些调试信息 */}}
{{printf "调试信息：%v" .}}
{{/* 结束调试信息 */}}

5. Selection of comments

When using comments, we should make it clear what information we need to include in the comments. For example, we can add some information about the code writer, the code update time, and the purpose of the code in the comments, which helps other programmers understand the code better and helps improve the readability of the code.

{{/* 编写者：张三；更新时间：2022-01-01；用途： 输出用户信息 */}}
{{range .Users }}
  {{printf "用户名：%s，邮箱：%s" .Name .Email}}
{{end}}
{{/* 结束用户信息输出 */}}

In short, Golang Template comments can help us better organize and debug our code, and help improve code readability. When actually writing code, we should choose the appropriate comment method according to the situation, and be careful not to add too many comments to avoid confusing the code.

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