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  <div class="vevent h-event"> <h1 class="summary p-name">Getting Declarative with Cats & Promesa w/ Matthew Lyon</h1> <div class='date'><time class="dtstart dt-start" title="2016-08-04T18:00:00" datetime="2016-08-04T18:00:00">Thursday, August 4, 2016 from 6</time>–<time class="dtend dt-end" title="2016-08-04T20:00:00" datetime="2016-08-04T20:00:00">8pm</time></div> <div class="location vcard p-location h-card"> <a class="url" href='http://calagator.org/venues/202393539'><span class='fn org p-name'>Puppet</span></a> <div class="adr p-adr h-adr"> <div class="street-address p-street-address">308 SW 2nd Ave Fifth Floor</div> <span class="locality p-locality">Portland</span> , <span class="region p-region">OR</span> <span class="postal-code p-postal-code">97204</span> <div class="country-name p-country-name">US</div> (<a href='https://maps.google.com/maps?q=308%20SW%202nd%20Ave%20Fifth%20Floor,%20Portland%20OR%2097204%20US'>map</a>) </div> </div> <div class="description p-description"> <p>If you've ever had to interrupt a series of operations with ugly nested branching logic and thought, "there should be a better way", you're not alone. I'll show you how to use some basic category theory abstractions from funcool's cats library to write declarative code that's easier to read and reason about, and how to integrate it with their promesa library for declarative asynchronous programming.</p> <p>Cats:</p> <p><a href="http://funcool.github.io/cats/latest">http://funcool.github.io/cats/latest</a></p> <p>Promesa:</p> <p><a href="http://funcool.github.io/promesa/latest/">http://funcool.github.io/promesa/latest/</a></p> <p>Bio: Matthew Lyon helps humans and computers communicate.</p> </div> <h3>Links</h3> <ul> <li><a class="url u-url" href="http://www.meetup.com/clojure-pdx/events/232422292/">Website</a></li> </ul> </div>