Can I Use Package Functions in Go Without Specifying the Package Name?

Invoking Package Functions Without Explicit Package Name

Question:

Can packages in Go be imported without referencing their package name explicitly? If so, how can this be achieved?

Answer:

Yes, there are two methods to call package functions without using their package names:

1. Explicit Period Import:

Import a package using the "." (explicit period) instead of a name:

<code class="go">package main

import "." "fmt" // Import fmt without alias

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

This method makes all exported identifiers from the package accessible in the current package block.

Note: This practice is discouraged due to readability issues.

2. Variable Referencing:

Declare a package-level variable that references the desired function:

<code class="go">package main

import (
    "fmt"
)

var Println = fmt.Println // Reference Println from fmt package

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

Additionally, type aliases can be used to reference types. For example:

<code class="go">package main

import (
    "fmt"
)

type ScanState = fmt.ScanState // Type alias for ScanState

func main() {
    var state ScanState // Declare a variable of type ScanState
}</code>

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