How do I import the entire contents of a Go package?

Importing the Entire Contents of a Go Package

In Go, you can import individual functions, variables, or types from a package. However, you can also import the entire contents of a package, eliminating the need to prefix calls to its members with the package name.

The Dot Import

The Go Programming Language Specification allows for a dot import, represented by a period (.). When used in an import declaration, it instructs the compiler to import all exported identifiers from the specified package.

Usage

To import the full contents of a package, replace the package name with a period in the import declaration. For example, instead of:

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

you can write:

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

Access Imported Members

Once imported, the exported members of the package become accessible without the package prefix. For example:

<code class="go">package main

import . "fmt"

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

This code is equivalent to the following, where each call is prefixed with the fmt package name:

<code class="go">package main

import "fmt"

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

Playground

You can experiment with this feature in the Go Playground: https://play.golang.org/p/xl7DIxxMlU5

Output:

Hello, world

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