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		<title>The Go Playground</title>
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			<div id="head" itemprop="name">The Go Playground</div>
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				<input type="button" value="Format" id="fmt">
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						Imports
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<p><b>About the Playground</b></p>

<p>
The Go Playground is a web service that runs on
<a href="https://golang.org/">golang.org</a>'s servers.
The service receives a Go program, compiles, links, and
runs the program inside a sandbox, then returns the output.
</p>

<p>
If the program contains <a href="https://golang.org/pkg/testing">tests or examples</a>
and no main function, the service runs the tests.
Benchmarks will likely not be supported since the program runs in a sandboxed
environment with limited resources.
</p>

<p>
There are limitations to the programs that can be run in the playground:
</p>

<ul>

<li>
The playground can use most of the standard library, with some exceptions.
The only communication a playground program has to the outside world
is by writing to standard output and standard error.
</li>

<li>
In the playground the time begins at 2009-11-10 23:00:00 UTC
(determining the significance of this date is an exercise for the reader).
This makes it easier to cache programs by giving them deterministic output.
</li>

<li>
There are also limits on execution time and on CPU and memory usage.
</li>

</ul>

<p>
The article "<a href="https://blog.golang.org/playground" target="_blank" rel="noopener">Inside
the Go Playground</a>" describes how the playground is implemented.
The source code is available at <a href="https://go.googlesource.com/playground" target="_blank" rel="noopener">
https://go.googlesource.com/playground</a>.
</p>

<p>
The playground uses the latest stable release of Go.<br>
The current version is <a href="/p/1VcPUlPk_3">{{.GoVersion}}</a>.
</p>

<p>
The playground service is used by more than just the official Go project
(<a href="https://gobyexample.com/">Go by Example</a> is one other instance)
and we are happy for you to use it on your own site.
All we ask is that you
<a href="mailto:golang-dev@googlegroups.com">contact us first (note this is a public mailing list)</a>,
use a unique user agent in your requests (so we can identify you),
and that your service is of benefit to the Go community.
</p>

<p>
Any requests for content removal should be directed to
<a href="mailto:security@golang.org">security@golang.org</a>.
Please include the URL and the reason for the request.
</p>
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