What Standard Library Packages Can Be Imported in the Go Playground?

Packages Importable in the Go Playground

Q: What packages can be imported when using the Go playground (http://play.golang.org/)?

A: The Go playground allows imports from most packages within the standard library, as stated in the “About” button on the playground.

Exceptions to Importability

The standard library packages that cannot be imported in the playground are:

• Packages not found in the "Packages" page under the "Standard library" section.
• Runtime packages with missing Go type information (e.g., runtime/cgo).

Playground Implementation

For a detailed explanation of the playground implementation, refer to "Inside the Go Playground" published on the Go Blog.

Exhaustive Playground Test

The following code demonstrates the importability of all standard library packages (excluding non-buildable packages):

package main

import (
    // ... imports for all standard library packages listed in the "Packages" page ...
)

func main() {
    println("ok")
}

This code imports all standard library packages except runtime/cgo, which gives a compilation error due to missing Go type information.

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