<!doctype html>
<html>
	<head>
		<title>The Go Playground</title>
		<link rel="stylesheet" href="/static/style.css">
		<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
		<script src="/static/jquery-linedtextarea.js"></script>
		<script src="/playground.js"></script>
		<script src="/static/playground-embed.js"></script>
		<script>
		$(document).ready(function() {
			playground({
				'codeEl':       '#code',
				'outputEl':     '#output',
				'runEl':        '#run, #embedRun',
				'fmtEl':        '#fmt',
				'fmtImportEl':  '#imports',
				{{if $.Share}}
				'shareEl':      '#share',
				'shareURLEl':   '#shareURL',
				{{end}}
				'enableHistory': true,
				'enableShortcuts': true
			});
			playgroundEmbed({
				'codeEl':       '#code',
				{{if $.Share}}
				'shareEl':      '#share',
				{{end}}
				'embedEl':      '#embed',
				'embedLabelEl': '#embedLabel',
				'embedHTMLEl':  '#shareURL'
			});
			$('#code').linedtextarea();
			// Avoid line wrapping.
			$('#code').attr('wrap', 'off');
			var about = $('#about');
			about.click(function(e) {
				if ($(e.target).is('a')) {
					return;
				}
				about.hide();
			});
			$('#aboutButton').click(function() {
				if (about.is(':visible')) {
					about.hide();
					return;
				}
				about.show();
			})
			// Preserve "Imports" checkbox value between sessions.
			if (readCookie('playgroundImports') == 'true')
				$('#imports').attr('checked','checked');
			$('#imports').change(function() {
				createCookie('playgroundImports', $(this).is(':checked') ? 'true' : '');
			});
			// Fire Google Analytics events for Run/Share button clicks.
			if (window.trackEvent) {
				$('#run').click(function() {
					window.trackEvent('playground', 'click', 'run-button');
				});
				$('#share').click(function() {
					window.trackEvent('playground', 'click', 'share-button');
				});
			}
		});

		function createCookie(name, value) {
			document.cookie = name+"="+value+"; path=/";
		}

		function readCookie(name) {
			var nameEQ = name + "=";
			var ca = document.cookie.split(';');
			for(var i=0;i < ca.length;i++) {
				var c = ca[i];
				while (c.charAt(0)==' ') c = c.substring(1,c.length);
				if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
			}
			return null;
		}
		</script>
	</head>
	<body itemscope itemtype="http://schema.org/CreativeWork">
		<input type="button" value="Run" id="embedRun">
		<div id="banner">
			<div id="head" itemprop="name">The Go Playground</div>
			<div id="controls">
				<input type="button" value="Run" id="run">
				<input type="button" value="Format" id="fmt">
				<div id="importsBox">
					<label title="Rewrite imports on Format">
						<input type="checkbox" id="imports">
						Imports
					</label>
				</div>
				{{if $.Share}}
				<input type="button" value="Share" id="share">
				<input type="text" id="shareURL">
				<label id="embedLabel">
					<input type="checkbox" id="embed">
					embed
				</label>
				{{end}}
			</div>
			<div id="aboutControls">
				<input type="button" value="About" id="aboutButton">
			</div>
		</div>
		<div id="wrap">
			<textarea itemprop="description" id="code" name="code" autocorrect="off" autocomplete="off" autocapitalize="off" spellcheck="false">{{printf "%s" .Snippet.Body}}</textarea>
		</div>
		<div id="output"></div>
		<img itemprop="image" src="/static/gopher.png" style="display:none">
		<div id="about">
<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>
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">Inside
the Go Playground</a>" describes how the playground is implemented.
</p>

<p>
The playground uses the latest stable release of Go.<br>
To find the precise version, run <a href="/p/1VcPUlPk_3">this program</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>
		</div>
	</body>
</html>