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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Time and Concurrency</title>
<meta name="description" content="OOP themes can't melt FP dreams">
<meta name="author" content="Jason Lewis">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
<link rel="stylesheet" href="css/reveal.css">
<link rel="stylesheet" href="css/theme/night.css" id="theme">
<!-- Code syntax highlighting -->
<link rel="stylesheet" href="lib/css/zenburn.css">
<!-- Printing and PDF exports -->
<script>
var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text.css';
link.href = window.location.search.match( /print-pdf/gi ) ? 'css/print/pdf.css' : 'css/print/paper.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
</script>
<style type="text/css">
img.inline-logo {
margin: 1px;
text-align: center;
display: inline-block;
border: 0px !important;
float: left;
background: rgba(255, 255, 255, 0) !important;
box-shadow: 0 0 0px rgba(0, 0, 0, 0); important!;
align: center;
}
.img-wrap {
border: 0px !important;
display: inline-block;
margin: auto;
text-align: center;
}
</style>
</head>
<body>
<div class="reveal">
<div class="slides">
<section>
<h1>Time and Concurrency</h1>
<h3>Programming paradigms and the failure of state</h3>
<p>Jason Lewis</p>
<p>Yet Analytics</p>
</section>
<section>
<h2>Hello</h2>
<section>
<p>I think I was destined to become a functional programmer.</p>
</section>
<section>
<p>Some years ago</p>
<img src="res/punk1.jpg">
</section>
<section>
<p>I <s>spraypainted</s> liked graffiti like this...</p>
<img src="res/smash-state.jpg">
</section>
<section>
<p>...and ended up here.</p>
<img src="res/state-rich-hickey.jpg">
</section>
</section>
<section>
<h2>Time</h2>
<section>
<h3>We have problems with:</h3>
<ul>
<li>State</li>
<li>Value</li>
<li>Identity</li>
</ul>
</section>
<section>
<h3>Problems are both:</h3>
<ul>
<li>In our programs</li>
<li>In our datastores</li>
</ul>
</section>
<section>
<h4>There are solutions</h4>
<div>
<div class="img-wrap">
<img src="res/clojure-250.png" class="inline-logo" width="250px">
<p>Clojure</p>
</div>
<div class ="img-wrap">
<img src="res/datomic.png" class="inline-logo" width="250px">
<p>Datomic</p>
</div>
</div>
<p>(of which these are but two)</p>
</section>
<section>
<h2>What is it?</h2>
</section>
</section>
<section>
<h3>An Expert Explains</h3>
<video width="720" controls="true">
<source src="res/timey-wimey.mp4" type="video/mp4">
</video>
</section>
<section>
<h3>Time</h3>
<section>
<h6>Perception</h6>
<img src="res/atob.png">
</section>
<section>
<h6>Reality</h6>
<img src="res/kitten-yarn.jpg">
</section>
</section>
<section>
<blockquote cite="https://en.wikiquote.org/wiki/Heraclitus">
<p>You could not step twice into the same river.</p>
<footer>
—
<a href="https://en.wikiquote.org/wiki/Heraclitus">
Heraclitus of Ephesus
</a>
</footer>
</blockquote>
<img src="res/euphrates05.jpg" width="640px">
</section>
<!-- Concurrency -->
<section>
<h2>Concurrency</h2>
<p>Really, <code>(>= things 3)</code> </p>
<ul>
<li>Concurrency</li>
<li>Parallellism</li>
<li>Distributed systems</li>
<li>...</li>
</ul>
</section>
<section>
<h3>Concurrency</h3>
<section>
<p>Object-Oriented (stateful):</p>
<ul>
<li>Stateful objects</li>
<li>Mutexes and locking</li>
<li>No (realistic) notion of time</li>
</ul>
</section>
<section>
<img src="res/futbol-blast.gif">
</section>
<section>
<p>Functional:</p>
<ul>
<li>Pure fns are timeless</li>
<li>Zero state</li>
<li>Run anywhen, anywhere, same result</li>
</ul>
</section>
<section>
<img src="res/cat.hammock.gif">
</section>
</section>
<!--end stuff-->
<section>
<p>Baltimore Clojure Meetup</p>
<img src="res/bmore-clojure.jpg">
<p>
<a href="http://is.gd/baltimoreclojure">
http://is.gd/baltimoreclojure
</a>
</p>
</section>
<section>
<h2>Thank You!</h2>
<p>Jason Lewis</p>
<p>Yet Analytics</p>
<p><a href="https://twitter.com/canweriotnow">
@canweriotnow
</a></p>
<p>[email protected]</p>
<img src="res/yet-logo.png">
</section>
</div>
</div>
<script src="lib/js/head.min.js"></script>
<script src="js/reveal.js"></script>
<script>
Reveal.initialize({
controls: true,
progress: true,
history: true,
transition: 'slide', //none/fade/slide/convex/concave/zoom
//Plugins
dependencies: [
{ src: 'lib/js/classList.js',
condition: function() { return !document.body.classList; }
},
{ src: 'plugin/markdown/marked.js',
condition: function() {
return !!document.querySelector( '[data-markdown]');
}
},
{ src: 'plugin/markdown/markdown.js',
condition: function() {
return !!document.querySelector( '[data-markdown]');
}
},
{ src: 'plugin/highlight/highlight.js',
async: true,
condition: function() {
return !!document.querySelector( 'pre code');
}
},
{src: 'plugin/zoom-js/zoom.js', async: true },
{src: 'plugin/notes/notes.js', async: true}
]
})
</script>
</body>
</html>