OK
https://swift.org/
Websites
Runtime: 1.6s
On September 18, 2025, 05:58 PM UTC, https://swift.org/ was accessible when tested on 51896 in Iceland.
Failures
HTTP Experiment
null
DNS Experiment
null
Control
null
DNS Queries
Resolver:
172.217.40.18
Query:
IN A swift.org
Engine:
system
Name
Class
TTL
Type
DATA
@
IN
A
17.253.144.12
TCP Connections
Connection to 17.253.144.12:443 succeeded.
HTTP Requests
URL
GET https://www.swift.org/
Response Headers
Accept-Ranges:bytesAge:2Cache-Control:max-age=180, publicCdnuuid:e4e26e30-9037-47ba-be99-0ef4f1d3c4d3-1557742716Connection:keep-aliveContent-Length:34213Content-Type:text/html; charset=UTF-8Date:Thu, 18 Sep 2025 17:58:49 GMTEtag:"85a5-63f033ceed200"Last-Modified:Wed, 17 Sep 2025 18:16:40 GMTServer:AppleStrict-Transport-Security:max-age=31536000; includeSubdomainsVia:https/1.1 frcch1-edge-lx-009.ts.apple.com (acdn/260.16276), https/1.1 frcch1-edge-bx-006.ts.apple.com (acdn/260.16276)X-Cache:hit-stale, missX-Content-Type-Options:nosniffX-Frame-Options:SAMEORIGINX-Xss-Protection:1; mode=block
Response Body
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>
Swift Programming Language
</title>
<meta name="author" content="Apple Inc." />
<meta name="viewport" content="width=device-width initial-scale=1" />
<link
rel="prefetch"
href="/assets/images/landing-page/hero/bird.png"
as="image"
/>
<link
rel="prefetch"
href="/assets/images/landing-page/hero/orange-swoop-bottom.png"
as="image"
/>
<link
rel="prefetch"
href="/assets/images/landing-page/hero/orange-swoop-top.png"
as="image"
/>
<link
rel="prefetch"
href="/assets/images/landing-page/hero/purple-swoop.png"
as="image"
/>
<link
rel="prefetch"
href="/assets/images/landing-page/hero/white-swoop-1.png"
as="image"
/>
<link
rel="prefetch"
href="/assets/images/landing-page/hero/white-swoop-2.png"
as="image"
/>
<link rel="license" href="/LICENSE.txt" />
<link
rel="stylesheet"
media="all"
href="/assets/stylesheets/new-stylesheets/application.css"
/>
<script src="/assets/javascripts/new-javascripts/color-scheme-toggle.js"></script>
<script src="/assets/javascripts/new-javascripts/vendor/anime.iife.min.js"></script>
<script src="/assets/javascripts/new-javascripts/hero.js"></script>
<link
rel="shortcut icon"
sizes="16x16 24x24 32x32 48x48 64x64"
type="image/vnd.microsoft.icon"
href="/favicon.ico"
/>
<link rel="apple-touch-icon" href="/apple-touch-icon.png" />
<link
rel="apple-touch-icon"
sizes="57x57"
href="/apple-touch-icon-57x57.png"
/>
<link
rel="apple-touch-icon"
sizes="72x72"
href="/apple-touch-icon-72x72.png"
/>
<link
rel="apple-touch-icon"
sizes="76x76"
href="/apple-touch-icon-76x76.png"
/>
<link
rel="apple-touch-icon"
sizes="114x114"
href="/apple-touch-icon-114x114.png"
/>
<link
rel="apple-touch-icon"
sizes="120x120"
href="/apple-touch-icon-120x120.png"
/>
<link
rel="apple-touch-icon"
sizes="144x144"
href="/apple-touch-icon-144x144.png"
/>
<link
rel="apple-touch-icon"
sizes="152x152"
href="/apple-touch-icon-152x152.png"
/>
<link
rel="apple-touch-icon"
sizes="180x180"
href="/apple-touch-icon-180x180.png"
/>
<link
rel="mask-icon"
href="/assets/images/icon-swift.svg"
color="#F05339"
/>
<link
rel="alternate"
type="application/atom+xml"
title="Swift.org (Atom Feed)"
href="/atom.xml"
/>
<link rel="canonical" href="https://swift.org/" />
<meta name="twitter:card" content="summary" />
<meta name="twitter:site" content="@SwiftLang" />
<meta name="twitter:title" content="Swift.org" />
<meta
name="twitter:description"
content="Swift is a general-purpose programming language built using a modern approach to safety, performance, and software design patterns."
/>
<meta property="og:site_name" content="Swift.org" />
<meta
property="og:image"
content="https://swift.org/apple-touch-icon-180x180.png"
/>
<meta property="og:title" content="Swift.org" />
<meta property="og:url" content="https://swift.org" />
<meta
property="og:description"
content="Swift is a general-purpose programming language built using a modern approach to safety, performance, and software design patterns."
/>
</head>
<body>
<script>
// Set theme before body content to avoid flash of light styles in dark mode
setColorScheme(getStoredScheme())
</script>
<main>
<header class="site-navigation">
<div class="wrapper">
<h1 class="logo">
<a href="/" title="Swift.org"> <svg xmlns="http://www.w3.org/2000/svg" xml:space="preserve" viewBox="0 0 191.186 59.391"><path fill="#F05138" d="M59.387 16.45a82.463 82.463 0 0 0-.027-1.792c-.035-1.301-.112-2.614-.343-3.9-.234-1.307-.618-2.523-1.222-3.71a12.464 12.464 0 0 0-5.453-5.452C51.156.992 49.941.609 48.635.374c-1.288-.232-2.6-.308-3.902-.343a85.714 85.714 0 0 0-1.792-.027C42.23 0 41.52 0 40.813 0H18.578c-.71 0-1.419 0-2.128.004-.597.004-1.195.01-1.792.027-.325.009-.651.02-.978.036-.978.047-1.959.133-2.924.307-.98.176-1.908.436-2.811.81A12.503 12.503 0 0 0 3.89 3.89a12.46 12.46 0 0 0-2.294 3.158C.992 8.235.61 9.45.374 10.758c-.231 1.286-.308 2.599-.343 3.9a85.767 85.767 0 0 0-.027 1.792C-.001 17.16 0 17.869 0 18.578v22.235c0 .71 0 1.418.004 2.128.004.597.01 1.194.027 1.791.035 1.302.112 2.615.343 3.901.235 1.307.618 2.523 1.222 3.71a12.457 12.457 0 0 0 5.453 5.453c1.186.603 2.401.986 3.707 1.22 1.287.232 2.6.31 3.902.344.597.016 1.195.023 1.793.027.709.005 1.417.004 2.127.004h22.235c.709 0 1.418 0 2.128-.004.597-.004 1.194-.011 1.792-.027 1.302-.035 2.614-.112 3.902-.343 1.306-.235 2.521-.618 3.707-1.222a12.461 12.461 0 0 0 5.453-5.452c.604-1.187.987-2.403 1.222-3.71.231-1.286.308-2.6.343-3.9.016-.598.023-1.194.027-1.792.004-.71.004-1.419.004-2.129V18.578c0-.71 0-1.419-.004-2.128z"/><path fill="#FFF" d="m47.06 36.66-.004-.004c.066-.224.134-.446.191-.675 2.465-9.821-3.55-21.432-13.731-27.546 4.461 6.048 6.434 13.374 4.681 19.78-.156.571-.344 1.12-.552 1.653-.225-.148-.51-.316-.89-.527 0 0-10.127-6.252-21.103-17.312-.288-.29 5.852 8.777 12.822 16.14-3.284-1.843-12.434-8.5-18.227-13.802.712 1.187 1.558 2.33 2.489 3.43C17.573 23.932 23.882 31.5 31.44 37.314c-5.31 3.25-12.814 3.502-20.285.003a30.646 30.646 0 0 1-5.193-3.098c3.162 5.058 8.033 9.423 13.96 11.97 7.07 3.039 14.1 2.833 19.336.05l-.004.007c.024-.016.055-.032.08-.047.214-.116.428-.234.636-.358 2.516-1.306 7.485-2.63 10.152 2.559.654 1.27 2.041-5.46-3.061-11.74z"/><path id="logotype" d="M81.93 38.542c.465 4.12 4.394 6.822 9.852 6.822 5.185 0 8.924-2.701 8.924-6.44 0-3.22-2.265-5.185-7.478-6.495l-5.048-1.282c-7.26-1.801-10.534-5.077-10.534-10.48 0-6.658 5.813-11.27 14.082-11.27 8.022 0 13.726 4.639 13.917 11.325h-5.32c-.41-4.093-3.74-6.604-8.734-6.604-4.94 0-8.378 2.538-8.378 6.249 0 2.892 2.13 4.612 7.369 5.95l4.202 1.09c8.133 1.993 11.462 5.159 11.462 10.863 0 7.259-5.759 11.816-14.928 11.816-8.514 0-14.327-4.53-14.763-11.543h5.376zM140.049 49.43h-5.35l-6.249-21.776h-.109L122.12 49.43h-5.348l-7.914-28.518h5.184l5.513 22.896h.11l6.221-22.896h5.021l6.277 22.896h.11l5.512-22.896h5.13L140.05 49.43zM151.39 13.244c0-1.718 1.419-3.11 3.138-3.11 1.746 0 3.165 1.392 3.165 3.11 0 1.72-1.419 3.139-3.165 3.139a3.157 3.157 0 0 1-3.139-3.139zm.545 7.669h5.213V49.43h-5.213V20.913zM191.186 25.116v-4.204h-5.513v-6.821h-5.185v6.821h-9.964v-2.51c.027-2.538 1.01-3.603 3.357-3.603.764 0 1.528.083 2.156.192v-4.094a18.193 18.193 0 0 0-2.756-.218c-5.568 0-7.915 2.32-7.915 7.642v2.591h-3.983v4.204h3.983V49.43h5.185V25.116H180.488v16.838c0 5.512 2.101 7.64 7.559 7.64 1.174 0 2.51-.082 3.111-.218v-4.257c-.355.055-1.392.137-1.965.137-2.428 0-3.52-1.147-3.52-3.712V25.116h5.513z"/></svg> </a>
</h1>
<!-- desktop-navigation -->
<nav class="desktop-navigation" role="navigation">
<ul class="navigation-items">
<li class="nav-item ">
<a href="/documentation/" data-text="Docs"><span>Docs</span></a>
</li>
<li class="nav-item ">
<a href="/community/" data-text="Community"><span>Community</span></a>
</li>
<li class="nav-item ">
<a href="/packages/" data-text="Packages"><span>Packages</span></a>
</li>
<li class="nav-item ">
<a href="/blog/" data-text="Blog"><span>Blog</span></a>
</li>
<li class="border">
<span />
</li>
<li class="nav-item ">
<a href="/install" data-text="Install"><span>Install <span>(6.2)</span></span></a>
</li>
</ul>
</nav>
<!-- toggle -->
<button
id="menu-toggle"
class="menu-item menu-toggle open"
aria-expanded="false"
aria-label="Toggle Navigation Menu"
/>
</div>
<!-- mobile-navigation -->
<nav class="mobile-navigation" role="navigation">
<ul class="navigation-items">
<li class="nav-item ">
<a href="/documentation/" data-text="Docs"><span>Docs</span></a>
</li>
<li class="nav-item ">
<a href="/community/" data-text="Community"><span>Community</span></a>
</li>
<li class="nav-item ">
<a href="/packages/" data-text="Packages"><span>Packages</span></a>
</li>
<li class="nav-item ">
<a href="/blog/" data-text="Blog"><span>Blog</span></a>
</li>
<li class="border">
<span />
</li>
<li class="nav-item ">
<a href="/install" data-text="Install"><span>Install <span>(6.2)</span></span></a>
</li>
</ul>
</nav>
</header>
<div class="animation-container">
<canvas id="purple-swoop" width="1248" height="1116"></canvas>
<canvas id="white-swoop-1" width="1248" height="1116"></canvas>
<canvas id="orange-swoop-top" width="1248" height="1116"></canvas>
<canvas id="orange-swoop-bottom" width="1248" height="1116"></canvas>
<canvas id="white-swoop-2" width="1248" height="1116"></canvas>
<canvas id="bird" width="1248" height="1116"></canvas>
</div>
<section id="what-is-swift" class="section">
<div class="hero-content">
<h1>Swift is the powerful, flexible,<br /> multiplatform programming language.</h1>
<div class="sub-text"><h2>Fast. Expressive. Safe.</h2></div>
<a href="/install/" data-text="Install">Install</a>
<p>Tools for Linux, macOS, and Windows</p>
<h2>Create using Swift</h2>
</div>
<nav aria-label="Get started with Swift">
<ul class="primary-links">
<li>
<a href="/get-started/cloud-services" data-text="Cloud Services">
<i class="cloud"></i>
<div>
<h3 class="title">Cloud Services</h3>
<p class="subtitle">Run performant services on Linux and deploy to the cloud.</p>
</div>
</a>
</li>
<li>
<a href="/get-started/command-line-tools" data-text="Command Line">
<i class="command-line"></i>
<div>
<h3 class="title">Command Line</h3>
<p class="subtitle">Create powerful CLI tools that are fast and memory safe.</p>
</div>
</a>
</li>
<li>
<a href="/get-started/embedded" data-text="Embedded">
<i class="chip"></i>
<div>
<h3 class="title">Embedded</h3>
<p class="subtitle">Develop efficient, reliable firmware for devices like microcontrollers.</p>
</div>
</a>
</li>
</ul>
<ul class="secondary-links">
<li>
<a href="/getting-started/swiftui/" data-text="iOS apps">
<h4 class="title">iOS apps</h4>
</a>
</li>
<li>
<a href="/blog/swift-everywhere-windows-interop/" data-text="Windows apps">
<h4 class="title">Windows apps</h4>
</a>
</li>
<li>
<a href="/blog/mlx-swift/" data-text="Machine learning and AI">
<h4 class="title">Machine Learning & AI</h4>
</a>
</li>
<li>
<a href="/getting-started/library-swiftpm/" data-text="Packages">
<h4 class="title">Packages</h4>
</a>
</li>
</ul>
</nav>
<div class="swoop swoop-0 swoop-anim"></div>
</section>
<section id="pillar-1" class="section pillar">
<div class="pillar-wrapper content-wrapper">
<p class="pillar-intro">
Swift is the only language that scales from embedded devices and kernels to apps and cloud infrastructure. It’s simple, and expressive, with incredible performance and safety. And it has unmatched interoperability with C and C++.
</p>
<br />
<p class="pillar-intro">
It's the combination of approachability, speed, safety, and all of<br class="hide-small" /> Swift’s strengths that make it so unique.
</p>
</div>
<div class="callout with-code">
<div class="text">
<h3 class="callout-title">Fast</h3>
<p class="callout-subtitle">Build with speed and performance.</p>
<p class="callout-text body-copy">Swift meets the most performance-critical needs, while allowing your code to remain expressive and approachable. Swift compiles directly to native code and provides predictable memory management.</p>
</div>
<!-- prettier-ignore -->
<div class="code">
<div class="language-swift highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="c1">// Vectorized check that a utf8 buffer is all ASCII</span>
<span class="kd">func</span> <span class="nf">isASCII</span><span class="p">(</span><span class="nv">utf8</span><span class="p">:</span> <span class="kt">Span</span><span class="o"><</span><span class="kt">SIMD16</span><span class="o"><</span><span class="kt">UInt8</span><span class="o">>></span><span class="p">)</span> <span class="o">-></span> <span class="kt">Bool</span> <span class="p">{</span>
<span class="c1">// combine all the code units into a single entry</span>
<span class="n">utf8</span><span class="o">.</span><span class="n">indices</span><span class="o">.</span><span class="nf">reduce</span><span class="p">(</span><span class="nv">into</span><span class="p">:</span> <span class="kt">SIMD16</span><span class="p">())</span> <span class="p">{</span>
<span class="c1">// fold each set of code units into the result</span>
<span class="nv">$0</span> <span class="o">|=</span> <span class="n">utf8</span><span class="p">[</span><span class="nv">$1</span><span class="p">]</span>
<span class="p">}</span>
<span class="c1">// check that every entry is in the ASCII range</span>
<span class="o">.</span><span class="nf">max</span><span class="p">()</span> <span class="o"><</span> <span class="mh">0x80</span>
<span class="p">}</span>
</code></pre></div> </div>
</div>
</div>
<div class="callout reverse with-code">
<div class="text">
<h3 class="callout-title">Expressive</h3>
<p class="callout-subtitle">Concise code. Powerful results.</p>
<p class="callout-text body-copy">Swift empowers you to write advanced code in a concise, readable syntax that even a beginner can understand. Swift supports object-oriented, functional, and generic programming patterns that experienced developers are familiar with. Its progressive disclosure allows you to pick up the language quickly, taking advantage of power-user features as you need them.</p>
</div>
<!-- prettier-ignore -->
<div class="code">
<div class="language-swift highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="kd">import</span> <span class="kt">ArgumentParser</span>
<span class="c1">// Complete implementation of a command line tool</span>
<span class="kd">@main</span> <span class="kd">struct</span> <span class="kt">Describe</span><span class="p">:</span> <span class="kt">ParsableCommand</span> <span class="p">{</span>
<span class="kd">@Argument</span><span class="p">(</span><span class="nv">help</span><span class="p">:</span> <span class="s">"The values to describe."</span><span class="p">)</span>
<span class="k">var</span> <span class="nv">values</span><span class="p">:</span> <span class="p">[</span><span class="kt">Double</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">mutating</span> <span class="kd">func</span> <span class="nf">run</span><span class="p">()</span> <span class="p">{</span>
<span class="n">values</span><span class="o">.</span><span class="nf">sort</span><span class="p">()</span>
<span class="k">let</span> <span class="nv">total</span> <span class="o">=</span> <span class="n">values</span><span class="o">.</span><span class="nf">reduce</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="o">+</span><span class="p">)</span>
<span class="nf">print</span><span class="p">(</span>
<span class="s">"""
Smallest: </span><span class="se">\(</span><span class="n">values</span><span class="o">.</span><span class="n">first</span><span class="p">,</span> <span class="k">default</span><span class="p">:</span> <span class="s">"No value"</span><span class="se">)</span><span class="s">
Total: </span><span class="se">\(</span><span class="n">total</span><span class="se">)</span><span class="s">
Mean: </span><span class="se">\(</span><span class="n">total</span> <span class="o">/</span> <span class="kt">Double</span><span class="p">(</span><span class="n">values</span><span class="o">.</span><span class="n">count</span><span class="p">)</span><span class="se">)</span><span class="s">
"""</span><span class="p">)</span>
<span class="p">}</span>
<span class="p">}</span>
</code></pre></div> </div>
</div>
</div>
<div class="callout with-code">
<div class="text">
<h3 class="callout-title">Safe</h3>
<p class="callout-subtitle">Protect memory safety.</p>
<p class="callout-text body-copy">Swift prioritizes safety and eliminates entire classes of bugs and vulnerabilities by its design. Memory safety and data race safety are core features of the language, making them straightforward to integrate into your codebase. Safety is required at compile time, before your applications are ever run.</p>
</div>
<!-- prettier-ignore -->
<div class="code">
<div class="language-swift highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="k">let</span> <span class="nv">transform</span> <span class="o">=</span> <span class="kt">Affine2DTransformBuilder</span><span class="p">()</span>
<span class="o">.</span><span class="nf">translate</span><span class="p">([</span><span class="mf">10.0</span><span class="p">,</span> <span class="mf">20.0</span><span class="p">]</span><span class="o">.</span><span class="n">span</span><span class="p">)</span>
<span class="o">.</span><span class="nf">rotate</span><span class="p">(</span><span class="mf">30.0</span><span class="p">)</span>
<span class="o">.</span><span class="nf">build</span><span class="p">()</span>
<span class="k">let</span> <span class="nv">v</span> <span class="o">=</span> <span class="p">[</span><span class="mf">11.0</span><span class="p">,</span> <span class="mf">22.0</span><span class="p">,</span> <span class="mf">1.0</span><span class="p">]</span>
<span class="c1">// Call C functions safely with Swift types</span>
<span class="k">let</span> <span class="nv">u</span> <span class="o">=</span> <span class="nf">mat_vec_mul</span><span class="p">(</span>
<span class="n">transform</span><span class="p">,</span> <span class="n">rowCount</span><span class="p">,</span> <span class="n">colCount</span><span class="p">,</span> <span class="n">v</span><span class="o">.</span><span class="n">span</span><span class="p">,</span> <span class="n">allocator</span><span class="p">)</span>
<span class="k">let</span> <span class="nv">uMagnitude</span> <span class="o">=</span> <span class="nf">vec_mag</span><span class="p">(</span><span class="n">u</span><span class="o">.</span><span class="n">span</span><span class="p">)</span>
</code></pre></div> </div>
</div>
</div>
<div class="swoop swoop-1 swoop-anim"></div>
</section>
<section id="pillar-2" class="section pillar">
<div class="callout with-code">
<div class="text">
<h3 class="callout-title">Interoperable</h3>
<p class="callout-subtitle">Adopt in existing code incrementally.</p>
<p class="callout-text body-copy">Swift provides unmatched interoperability with its combination of natively understanding C and C++ types without the need for foreign function interfaces, and by providing bridging for bi-directional access. Swift’s interoperability features allow you to incrementally adopt the language into existing codebases without requiring a full code rewrite.</p>
</div>
<!-- prettier-ignore -->
<div class="code">
<div class="language-swift highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="kd">import</span> <span class="kt">CxxStdlib</span>
<span class="c1">// Use types from C++, like std::string, directly</span>
<span class="k">let</span> <span class="nv">beverages</span><span class="p">:</span> <span class="p">[</span><span class="n">std</span><span class="o">.</span><span class="n">string</span><span class="p">]</span> <span class="o">=</span> <span class="p">[</span>
<span class="s">"apple juice"</span><span class="p">,</span> <span class="s">"grape juice"</span><span class="p">,</span> <span class="s">"green tea"</span>
<span class="p">]</span>
<span class="k">let</span> <span class="nv">juices</span> <span class="o">=</span> <span class="n">beverages</span><span class="o">.</span><span class="n">filter</span> <span class="p">{</span> <span class="n">cppstring</span> <span class="k">in</span>
<span class="c1">// and call methods directly on C++ types</span>
<span class="n">cppstring</span><span class="o">.</span><span class="nf">find</span><span class="p">(</span><span class="o">.</span><span class="nf">init</span><span class="p">(</span><span class="s">"juice"</span><span class="p">))</span> <span class="o">!=</span> <span class="n">std</span><span class="o">.</span><span class="n">string</span><span class="o">.</span><span class="n">npos</span>
<span class="p">}</span>
</code></pre></div> </div>
</div>
</div>
<div class="callout reverse with-code">
<div class="text">
<h3 class="callout-title">Adaptable</h3>
<p class="callout-subtitle">From microcontrollers to servers.</p>
<p class="callout-text body-copy">The only language that can span from embedded and kernel, to server and apps. Swift excels no matter where it’s used: from constrained environments like firmware where every byte counts, to cloud services handling billions of requests a day.</p>
</div>
<!-- prettier-ignore -->
<div class="code">
<div class="language-swift highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="c1">// Configure UART by direct register manipulation </span>
<span class="c1">// using Swift MMIO. Enables RX and TX, and sets</span>
<span class="c1">// baud rate to 115,200. Compiles down to an</span>
<span class="c1">// optimal assembly sequence with no overhead.</span>
<span class="n">usart1</span><span class="o">.</span><span class="n">brr</span><span class="o">.</span><span class="n">modify</span> <span class="p">{</span> <span class="n">rw</span> <span class="k">in</span>
<span class="n">rw</span><span class="o">.</span><span class="n">raw</span><span class="o">.</span><span class="n">brr_field</span> <span class="o">=</span> <span class="mi">16_000_000</span> <span class="o">/</span> <span class="mi">115_200</span>
<span class="p">}</span>
<span class="n">usart1</span><span class="o">.</span><span class="n">cr1</span><span class="o">.</span><span class="n">modify</span> <span class="p">{</span> <span class="n">rw</span> <span class="k">in</span>
<span class="n">rw</span><span class="o">.</span><span class="n">ue</span> <span class="o">=</span> <span class="o">.</span><span class="kt">Enabled</span>
<span class="n">rw</span><span class="o">.</span><span class="n">re</span> <span class="o">=</span> <span class="o">.</span><span class="kt">Enabled</span>
<span class="n">rw</span><span class="o">.</span><span class="n">te</span> <span class="o">=</span> <span class="o">.</span><span class="kt">Enabled</span>
<span class="p">}</span>
</code></pre></div> </div>
</div>
</div>
<div class="swoop swoop-2 swoop-anim"></div>
</section>
<section id="pillar-3" class="section pillar">
<div class="callout ">
<div class="text">
<h3 class="callout-title">Open Source</h3>
<p class="callout-subtitle">Contribute and get involved.</p>
</div>
<div class="links">
<a href="https://github.com/swiftlang">View SwiftLang on GitHub</a>
<a href="https://forums.swift.org">Join the forums</a>
</div>
</div>
</section>
<footer class="global-footer">
<div class="container">
<div class="footer-navigation-container">
<nav aria-label="Main">
<a class="logo" href="/" title="Swift.org"> <svg xmlns="http://www.w3.org/2000/svg" xml:space="preserve" viewBox="0 0 191.186 59.391"><path fill="#F05138" d="M59.387 16.45a82.463 82.463 0 0 0-.027-1.792c-.035-1.301-.112-2.614-.343-3.9-.234-1.307-.618-2.523-1.222-3.71a12.464 12.464 0 0 0-5.453-5.452C51.156.992 49.941.609 48.635.374c-1.288-.232-2.6-.308-3.902-.343a85.714 85.714 0 0 0-1.792-.027C42.23 0 41.52 0 40.813 0H18.578c-.71 0-1.419 0-2.128.004-.597.004-1.195.01-1.792.027-.325.009-.651.02-.978.036-.978.047-1.959.133-2.924.307-.98.176-1.908.436-2.811.81A12.503 12.503 0 0 0 3.89 3.89a12.46 12.46 0 0 0-2.294 3.158C.992 8.235.61 9.45.374 10.758c-.231 1.286-.308 2.599-.343 3.9a85.767 85.767 0 0 0-.027 1.792C-.001 17.16 0 17.869 0 18.578v22.235c0 .71 0 1.418.004 2.128.004.597.01 1.194.027 1.791.035 1.302.112 2.615.343 3.901.235 1.307.618 2.523 1.222 3.71a12.457 12.457 0 0 0 5.453 5.453c1.186.603 2.401.986 3.707 1.22 1.287.232 2.6.31 3.902.344.597.016 1.195.023 1.793.027.709.005 1.417.004 2.127.004h22.235c.709 0 1.418 0 2.128-.004.597-.004 1.194-.011 1.792-.027 1.302-.035 2.614-.112 3.902-.343 1.306-.235 2.521-.618 3.707-1.222a12.461 12.461 0 0 0 5.453-5.452c.604-1.187.987-2.403 1.222-3.71.231-1.286.308-2.6.343-3.9.016-.598.023-1.194.027-1.792.004-.71.004-1.419.004-2.129V18.578c0-.71 0-1.419-.004-2.128z"/><path fill="#FFF" d="m47.06 36.66-.004-.004c.066-.224.134-.446.191-.675 2.465-9.821-3.55-21.432-13.731-27.546 4.461 6.048 6.434 13.374 4.681 19.78-.156.571-.344 1.12-.552 1.653-.225-.148-.51-.316-.89-.527 0 0-10.127-6.252-21.103-17.312-.288-.29 5.852 8.777 12.822 16.14-3.284-1.843-12.434-8.5-18.227-13.802.712 1.187 1.558 2.33 2.489 3.43C17.573 23.932 23.882 31.5 31.44 37.314c-5.31 3.25-12.814 3.502-20.285.003a30.646 30.646 0 0 1-5.193-3.098c3.162 5.058 8.033 9.423 13.96 11.97 7.07 3.039 14.1 2.833 19.336.05l-.004.007c.024-.016.055-.032.08-.047.214-.116.428-.234.636-.358 2.516-1.306 7.485-2.63 10.152 2.559.654 1.27 2.041-5.46-3.061-11.74z"/><path id="logotype" d="M81.93 38.542c.465 4.12 4.394 6.822 9.852 6.822 5.185 0 8.924-2.701 8.924-6.44 0-3.22-2.265-5.185-7.478-6.495l-5.048-1.282c-7.26-1.801-10.534-5.077-10.534-10.48 0-6.658 5.813-11.27 14.082-11.27 8.022 0 13.726 4.639 13.917 11.325h-5.32c-.41-4.093-3.74-6.604-8.734-6.604-4.94 0-8.378 2.538-8.378 6.249 0 2.892 2.13 4.612 7.369 5.95l4.202 1.09c8.133 1.993 11.462 5.159 11.462 10.863 0 7.259-5.759 11.816-14.928 11.816-8.514 0-14.327-4.53-14.763-11.543h5.376zM140.049 49.43h-5.35l-6.249-21.776h-.109L122.12 49.43h-5.348l-7.914-28.518h5.184l5.513 22.896h.11l6.221-22.896h5.021l6.277 22.896h.11l5.512-22.896h5.13L140.05 49.43zM151.39 13.244c0-1.718 1.419-3.11 3.138-3.11 1.746 0 3.165 1.392 3.165 3.11 0 1.72-1.419 3.139-3.165 3.139a3.157 3.157 0 0 1-3.139-3.139zm.545 7.669h5.213V49.43h-5.213V20.913zM191.186 25.116v-4.204h-5.513v-6.821h-5.185v6.821h-9.964v-2.51c.027-2.538 1.01-3.603 3.357-3.603.764 0 1.528.083 2.156.192v-4.094a18.193 18.193 0 0 0-2.756-.218c-5.568 0-7.915 2.32-7.915 7.642v2.591h-3.983v4.204h3.983V49.43h5.185V25.116H180.488v16.838c0 5.512 2.101 7.64 7.559 7.64 1.174 0 2.51-.082 3.111-.218v-4.257c-.355.055-1.392.137-1.965.137-2.428 0-3.52-1.147-3.52-3.712V25.116h5.513z"/></svg> </a>
<ul>
<li class="item ">
<a href="/documentation/" data-text="Docs">Docs</a>
</li>
<li class="item ">
<a href="/community/" data-text="Community">Community</a>
</li>
<li class="item ">
<a href="/packages/" data-text="Packages">Packages</a>
</li>
<li class="item ">
<a href="/blog/" data-text="Blog">Blog</a>
</li>
<li class="item ">
<a href="/install/" data-text="Install">Install</a>
</li>
</ul>
</nav>
<nav aria-label="Tools">
<h3>Tools</h3>
<ul>
<li class="item ">
<a href="https://developer.apple.com/xcode/" data-text="Xcode">Xcode</a>
</li>
<li class="item ">
<a href="/documentation/articles/getting-started-with-vscode-swift.html" data-text="Visual Studio Code">Visual Studio Code</a>
</li>
<li class="item ">
<a href="/documentation/articles/zero-to-swift-emacs.html" data-text="Emacs">Emacs</a>
</li>
<li class="item ">
<a href="/documentation/articles/zero-to-swift-nvim.html" data-text="Neovim">Neovim</a>
</li>
<li class="item ">
<a href="https://github.com/swiftlang/sourcekit-lsp/tree/main/Documentation/Editor%20Integration.md" data-text="Other Editors">Other Editors</a>
</li>
</ul>
</nav>
<nav aria-label="Community">
<h3>Community</h3>
<ul>
<li class="item ">
<a href="/community/" data-text="Overview">Overview</a>
</li>
<li class="item ">
<a href="/swift-evolution/" data-text="Swift Evolution">Swift Evolution</a>
</li>
<li class="item ">
<a href="/diversity/" data-text="Diversity">Diversity</a>
</li>
<li class="item ">
<a href="/mentorship/" data-text="Mentorship">Mentorship</a>
</li>
<li class="item ">
<a href="/contributing/" data-text="Contributing">Contributing</a>
</li>
</ul>
</nav>
<nav class="governance" aria-label="Governance">
<h3>Governance</h3>
<ul>
<li class="item ">
<a href="/code-of-conduct/" data-text="Code of Conduct">Code of Conduct</a>
</li>
<li class="item ">
<a href="/legal/license.html" data-text="License">License</a>
</li>
<li class="item ">
<a href="/support/security.html" data-text="Security">Security</a>
</li>
</ul>
<form
class="color-scheme-toggle"
role="radiogroup"
tabindex="0"
id="color-scheme-toggle"
>
<legend class="visuallyhidden">Color scheme preference</legend>
<label class="scheme-light" for="scheme-light">
<input
id="scheme-light"
type="radio"
name="color-scheme-preference"
value="light"
/>
<span class="color-scheme-toggle-label">Light</span>
</label>
<label class="scheme-dark" for="scheme-dark">
<input
id="scheme-dark"
type="radio"
name="color-scheme-preference"
value="dark"
/>
<span class="color-scheme-toggle-label">Dark</span>
</label>
<label class="scheme-auto-wrapper" for="scheme-auto" id="scheme-auto-wrapper">
<input
id="scheme-auto"
type="radio"
name="color-scheme-preference"
value="auto"
/>
<span class="color-scheme-toggle-label">Auto</span>
</label>
</form>
</nav>
</div>
<div class="sub-navigation">
<div class="legals">
<div class="copyright">
<p>
Copyright © 2025 Apple Inc. All rights reserved.
</p>
<p>
Swift and the Swift logo are trademarks of Apple Inc.
</p>
</div>
<nav aria-label="Legals">
<ul>
<li class="item ">
<a href="//www.apple.com/privacy/privacy-policy/">Privacy Policy</a>
</li>
<li class="item ">
<a href="//www.apple.com/legal/privacy/en-ww/cookies/">Cookies</a>
</li>
<li class="item ">
<a href="/openapi">API</a>
</li>
</ul>
</nav>
</div>
<nav class="socials" aria-label="Socials">
<ul>
<li class="item ">
<a href="https://x.com/swiftlang" rel="me" title="Follow @SwiftLang on X"><i class="x"></i></a>
</li>
<li class="item ">
<a href="https://bsky.app/profile/swift.org" rel="me" title="Follow @swift.org on Bluesky"><i class="bluesky"></i></a>
</li>
<li class="item ">
<a href="https://mastodon.social/@swiftlang" rel="me" title="Follow @swiftLang on Mastodon"><i class="mastodon"></i></a>
</li>
<li class="item ">
<a href="/atom.xml" rel="me" title="Subscribe to Site Updates"><i class="feed"></i></a>
</li>
</ul>
</nav>
</div>
</div>
</footer>
</main>
<script src="/assets/javascripts/new-javascripts/application.js"></script>
<script src="/assets/javascripts/new-javascripts/landing.js"></script>
<!-- metrics -->
<script>
/* RSID: */
var s_account = 'awdswiftorg'
</script>
<script src="https://developer.apple.com/assets/metrics/scripts/analytics.js"></script>
<script>
s.pageName = AC && AC.Tracking && AC.Tracking.pageName()
/************* DO NOT ALTER ANYTHING BELOW THIS LINE ! **************/
var s_code = s.t()
if (s_code) document.write(s_code)
</script>
<!-- /metrics -->
</body>
</html>
URL
GET https://swift.org/
Response Headers
Cache-Control:no-storeCdnuuid:1cd0126f-6f5a-4332-8d48-d8d846b74fc0-26470749868Connection:keep-aliveContent-Language:enContent-Length:257Content-Type:text/htmlDate:Thu, 18 Sep 2025 17:58:48 GMTLocation:https://www.swift.org/Via:http/1.1 uklon6-edge-bx-030.ts.apple.com (acdn/260.16276)X-Cache:none
Response Body
<HTML> <HEAD> <TITLE>Document Has Moved</TITLE> </HEAD> <BODY BGCOLOR="white" FGCOLOR="black"> <H1>Document Has Moved</H1> <HR> <FONT FACE="Helvetica,Arial"><B> Description: The document you requested has moved to a new location. </B></FONT> <HR> </BODY>
Resolver
Resolver ASN
AS15169
Resolver IP
172.217.40.18
Resolver Network Name
Google LLC
Report ID
20250918T175655Z_webconnectivity_IS_51896_n4_C5ACMGrIbm2vmWax
Platform
windows
Software Name
ooniprobe-desktop-unattended (3.14.1)
Measurement Engine
ooniprobe-engine (3.14.1)