How to view documentation for a Golang function?

There are several ways to view the documentation of Golang functions: Use the help command to open the Golang playground or IDE. Use the godocs website. Use the IDE's inline documentation.

How to view the documentation of a Golang function

The documentation of a Golang function provides detailed information about the purpose, usage, and parameters of the function. There are several ways to view the documentation for a function.

Use the help command

to open Golang playground or IDE, such as VSCode. Then, enter the following command:

help <function-name>

For example, to view documentation for the fmt.Println function, type:

help fmt.Println

Use godocs Website

You can view function documentation on the official Golang godocs website: https://godoc.org/.

Use the search bar to find the function you want to explore. For example, for the fmt.Println function, visit:

https://godoc.org/fmt#Println

Inline documentation using the IDE

Some IDEs, such as VSCode, provide inline documentation functionality. Hover your cursor over a function name to view its documentation.

Practical case

View the documentation of the fmt.Scanln function:

help fmt.Scanln

The output will display the function documentation:

func Scanln(a ...interface{}) (n int, err error)

This tells us:

• Scanln is a function that scans input into a given interface value.
• It returns two values: the number of values ​​entered and any errors.

By using these methods to view function documentation, you can take full advantage of the powerful features and clear interface available in Golang.

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