edit.html - playground - Git at Google

 <!doctype html>
 <html>
 	<head>
 		<title>The {{if .Gotip}}Gotip{{else}}Go{{end}} Playground</title>
 		<link rel="stylesheet" href="/static/style.css">
 		{{if .Analytics}}
 		<script async src="https://www.googletagmanager.com/gtag/js?id=UA-11222381-7"></script>
 		<script>
 			window.dataLayer = window.dataLayer || [];
 			function gtag(){dataLayer.push(arguments);}
 			gtag('js', new Date());
 			gtag('config', 'UA-11222381-7');
 			gtag('config', 'UA-49880327-6');
 		</script>
 		{{end}}
 		<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',
 				'shareEl':      '#share',
 				'shareURLEl':   '#shareURL',
 				'enableHistory': true,
 				'enableShortcuts': true,
 				'enableVet': true,
 				'toysEl': '.js-playgroundToysEl'
 			});
 			playgroundEmbed({
 				'codeEl':       '#code',
 				'shareEl':      '#share',
 				'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' : '');
 			});
 			{{if .Analytics}}
 			// Fire Google Analytics events for Run/Share button clicks.
 			$('#run').click(function() {
 				gtag('event', 'click', {
 					event_category: 'playground',
 					event_label: 'run-button',
 				});
 			});
 			$('#share').click(function() {
 				gtag('event', 'click', {
 					event_category: 'playground',
 					event_label: 'share-button',
 				});
 			});
 			{{end}}
 		});

 		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 {{if .Gotip}}<a href="https://golang.org/dl/gotip">Gotip</a>{{else}}Go{{end}} Playground</div>
 			<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>
 			<input type="button" value="Share" id="share">
 			<input type="text" id="shareURL">
 			<label id="embedLabel">
 				<input type="checkbox" id="embed">
 				embed
 			</label>
 			<select class="js-playgroundToysEl">
 				{{range .Examples}}
 				<option value="{{.Path}}">{{.Title}}</option>
 				{{end}}
 			</select>
 			<input type="button" value="About" id="aboutButton">
 		</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, <a href="https://golang.org/cmd/vet/">vets</a>, 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>
 {{if .Gotip}}
 This playground uses a development version of Go.<br>
 {{else}}
 The playground uses the latest stable release of Go.<br>
 {{end}}
 The current version is <a href="/p/Ztyu2FJaajl">{{.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>
 		</div>
 	</body>
 </html>
	<!doctype html>
	<html>
	<head>
	<title>The {{if .Gotip}}Gotip{{else}}Go{{end}} Playground</title>
	<link rel="stylesheet" href="/static/style.css">
	{{if .Analytics}}
	<script async src="https://www.googletagmanager.com/gtag/js?id=UA-11222381-7"></script>
	<script>
	window.dataLayer = window.dataLayer \|\| [];
	function gtag(){dataLayer.push(arguments);}
	gtag('js', new Date());
	gtag('config', 'UA-11222381-7');
	gtag('config', 'UA-49880327-6');
	</script>
	{{end}}
	<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',
	'shareEl': '#share',
	'shareURLEl': '#shareURL',
	'enableHistory': true,
	'enableShortcuts': true,
	'enableVet': true,
	'toysEl': '.js-playgroundToysEl'
	});
	playgroundEmbed({
	'codeEl': '#code',
	'shareEl': '#share',
	'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' : '');
	});
	{{if .Analytics}}
	// Fire Google Analytics events for Run/Share button clicks.
	$('#run').click(function() {
	gtag('event', 'click', {
	event_category: 'playground',
	event_label: 'run-button',
	});
	});
	$('#share').click(function() {
	gtag('event', 'click', {
	event_category: 'playground',
	event_label: 'share-button',
	});
	});
	{{end}}
	});

	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 {{if .Gotip}}<a href="https://golang.org/dl/gotip">Gotip</a>{{else}}Go{{end}} Playground</div>
	<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>
	<input type="button" value="Share" id="share">
	<input type="text" id="shareURL">
	<label id="embedLabel">
	<input type="checkbox" id="embed">
	embed
	</label>
	<select class="js-playgroundToysEl">
	{{range .Examples}}
	<option value="{{.Path}}">{{.Title}}</option>
	{{end}}
	</select>
	<input type="button" value="About" id="aboutButton">
	</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, <a href="https://golang.org/cmd/vet/">vets</a>, 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>
	{{if .Gotip}}
	This playground uses a development version of Go.<br>
	{{else}}
	The playground uses the latest stable release of Go.<br>
	{{end}}
	The current version is <a href="/p/Ztyu2FJaajl">{{.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>
	</div>
	</body>
	</html>