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  <div class="vevent h-event"> <h1 class="summary p-name">Async Programming on iOS</h1> <div class='date'><time class="dtstart dt-start" title="2014-03-05T18:00:00" datetime="2014-03-05T18:00:00">Wednesday, March 5, 2014 from 6</time>–<time class="dtend dt-end" title="2014-03-05T20:00:00" datetime="2014-03-05T20:00:00">8pm</time></div> <div class="location vcard p-location h-card"> <a class="url" href='http://calagator.org/venues/202391949'><span class='fn org p-name'>Thetus Corporation</span></a> <div class="adr p-adr h-adr"> <div class="street-address p-street-address">34 NW 1st Ave</div> <span class="locality p-locality">Portland</span> , <span class="region p-region">Oregon</span> <span class="postal-code p-postal-code">97209</span> <div class="country-name p-country-name">United States</div> (<a href='https://maps.google.com/maps?q=34%20NW%201st%20Ave,%20Portland%20Oregon%2097209%20United%20States'>map</a>) </div> </div> <div class="description p-description"> <p>Join us for a technical overview of asynchronous programming on iOS with our own Paul Jungwirth covering:</p> <ul> <li><p>an overview of ARC, strong/weak references.</p></li> <li><p>blocks & closures, including the "strong-weak dance"</p></li> <li><p>techniques for writing to memory from multiple threads.</p></li> <li><p>GCD - queues and dispatch_async.</p></li> </ul> <p>Agenda:</p> <ul> <li><p>Intros & Announcements</p></li> <li><p>Presentation</p></li> <li><p>Questions and Discussions</p></li> <li><p>Old Town Pizza for food, drink and further discussion.</p></li> </ul> <p>Paul Jungwirth is a freelance developer specializing in Rails, Postgres, Javascript, and Chef, with some iOS thrown in too. In high school he helped build one of the first HTTP servers for the Macintosh, and despite efforts to escape to the humanities, he can't seem to quit his love for programming.</p> </div> <h3>Links</h3> <ul> <li><a class="url u-url" href="http://www.meetup.com/PDX-iOS/events/167116292/">Website</a></li> </ul> </div>