Philip Tellis

1543735477 f302fdc3a3

Philip Tellis



Philip Tellis is a geek who likes to make the computer do his work for him. As part of his job with the Performance and Security teams at Yahoo! he analyses the impact of various design decisions on web application performance and security. He also maintains the javascript implementation of strftime used in YUI and plays around with security, accessibility and i18n. He is the maintainer of several opensource projects including ayttm and libyahoo2, and most recently, boomerang — a real user web performance measurement tool.

In his spare time, Philip enjoys cycling, reading, cooking and learning spoken languages.

Philip has spoken at several conferences in the past, including FOSS.IN, FREED.IN, Ubuntulive, Linux Symposium, PHP Quebec, Opensource Bridge, WebDU, FOSDEM, IPC and ConFoo.

Open Source Bridge 2011

Proposals for this user

* Measuring network characteristics using JavaScript

The browser doesn't really allow JavaScript to access anything outside its sandbox, but by understanding how the browser works, and making a few approximations, there's a lot that we can measure using just JavaScript. This talk will go into some of these tricks we developed while building boomerang.
Hacks 2011-03-15 07:06:26 +0000
Philip Tellis

Open Source Bridge 2010

Proposals for this user

* Emperor Mensuraton and the Sword of Statisticales

The rule of Emperor Mensuraton begat army upon army of data until it overran the Empire. The Sword of Statisticales was dispatched to reduce them summarily. Some were average, while others were mean, and one was a la mode. They plotted through lines, bars and pies until finally there emerged one number to rule them all.
Chemistry 2010-03-16 01:39:04 +0000
Philip Tellis

* Regular expressions and meta obsessions

How do you parse and validate a date? What about an email address? A URL, phone number, postal code? How do you quickly search through a file for something that you only know a little about? Regular Expressions, that's how.
Cooking 2010-03-26 03:53:00 +0000
Philip Tellis

Open Source Bridge 2009

Sessions for this user

* Programming patterns in sed

Learn to turn line noise into clean and structured, albeit unreadable, sed programs.
Philip Tellis

Proposals for this user

* Being a geek

Who's this geek chap that you speak of and why are you so proud to be one?
Culture 2009-03-29 05:06:49 +0000
Philip Tellis

* Can I get a date please?

A quick run down on Javascript dates, how they work across browsers and how to localise them with YUI.
Chemistry 2009-03-29 11:51:01 +0000
Philip Tellis

* sexeger cisab

...or as they say in a mirror universe, basic regexes. A run through on getting the most out of regular expressions.
Cooking 2009-03-29 05:33:15 +0000
Philip Tellis