Can I Import Everything from a Package in Go and Avoid Prefixes?

Importing the Entire Contents of a Package

In Go, importing a package typically requires prefixing calls to its functions and variables with the package name. For instance, consider the following code:

<code class="go">import "fmt"

func main() {
    fmt.Println("Hello, world")
}</code>

Here, you need to use the fmt prefix before calling Println. However, is there a way to import everything from a package and eliminate the need for prefixes?

Yes, the Go Programming Language Specification allows you to import the entire contents of a package by using a dot (.) instead of a specific identifier in the import declaration. This means that all exported identifiers from that package will be declared in your source file's block and can be accessed without any qualifiers.

For example, you can modify the code above to:

<code class="go">import . "fmt"

func main() {
    Println("Hello, world")
}</code>

In this case, you can call Println directly without using the fmt prefix.

Here's an example playground: https://play.golang.org/p/xl7DIxxMlU5

This technique can be useful when you want to access multiple exported identifiers from a package frequently and avoid unnecessary prefixing.

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