How to Comment in Go

Commenting is a fundamental practice that is often required in different programming tasks. So, if you’re looking to learn how to comment in Golang, you’re in the right place.

Before diving into the code examples, let’s first understand the theory behind commenting in Golang.

Commenting in Golang involves adding text to your code that is ignored by the compiler. Comments are used to explain the code, provide documentation, or disable code temporarily. Golang supports two types of comments: single-line and multi-line comments.

Single-line comments start with two forward slashes (//) and continue until the end of the line. Here’s an example:

package main

import "fmt"

func main() {
   // This is a single-line comment
   fmt.Println("Hello, world!")
}

In the code above, we use a single-line comment to explain what the code does. The comment starts with two forward slashes (//) and continues until the end of the line.

Multi-line comments, also known as block comments, start with a slash and an asterisk (/) and end with an asterisk and a slash (/). Here’s an example:

package main

import "fmt"

/*
This is a multi-line comment
It can span multiple lines
*/
func main() {
   fmt.Println("Hello, world!")
}

In the code above, we use a multi-line comment to explain the code in more detail. The comment starts with /* and ends with */. It can span multiple lines and is used for more detailed documentation.

So why would someone want to comment in Golang? One common use case is for documenting your code. By adding comments to your code, you can make it easier for other developers to understand what the code does and how it works. Comments can also help you remember why you wrote a certain piece of code and can make it easier to maintain and update your code.

Conclusion

Commenting in Golang is a fundamental practice that you’ll encounter frequently in your Golang programming journey. By using single-line or multi-line comments, you can explain your code, provide documentation, or disable code temporarily.

I hope you found this tutorial helpful. If you have any questions or comments, please feel free to leave them below.