js0n's weblog

What I Do With My Spare Time

js0n — Wed, 08 Oct 2008 23:11:49 +0000

If you’ve taken a look at my resume, you might have noticed that in university, I started a poker club. At the time, poker was huge and I was caught up in that world for some time. One of the more interesting encounters that I had was with a pair of card mechanics that were trolling the local university poker games. Needless to say, they were ejected from the game after some questionable hands. Ever since then, I’ve been quite fascinated by the skill involved in card manipulation. The topic was far more extensive than I ever knew. I was introduced to a book called Robert Giobbi’s Card College by a friend of a friend who worked at Amazon, while I was working at RealNetworks in Seattle; they too happened to be an amateur card magician. The following is a trick that he showed me:

To the uninitiated, what you’ve just witnessed is my attempt at a riffle pass. This sleight of hand is a variation of the classic pass, a staple of card magic.

Six Month Review

js0n — Wed, 08 Oct 2008 18:16:51 +0000

It has been a while since my last post and about six months since I’ve began my startup endeavor, so I’ll try to recap a lot of things that have happened since that time. The last time I posted, I was in the midst of development of the first revision of projectnightout.com. At the time, this project was still known as plannr. I encountered a number of problems during the design of the site that forced me to refine my development methodology. Soon after I realized that this revision would not yield a product suitable for mass consumption, I went back to the drawing board, and came up with a number of mockups for a next revision of the site while travelling in Asia.

(As an aside, I travelled to Japan, Thailand and Hong Kong with my girlfriend and a friend of mine during the summer. We climbed Mount Fuji, which was definitely a grueling, but ultimately worthwhile experience.)

This revision of the project seemed to be a more clearly defined implementation of some ideas that I had for this project. Thus, after three intense weeks of starting from scratch, I came up with the main event creation workflow, as well as a number of supporting pages that were necessary to implement as dependencies, ie. registration, user settings, profile, etc. Thus, projectnightout.com silently launched on September 26, 2008. You can see some footage of the site in action here:

This release was meant to iron out some deployment issues before the official private beta launch. However, since I was winding down from a long programming stretch (I changed my sleep schedule for a few weeks to work during the nights and sleep during the day to increase my productivity), I decided to solicit opinions from a number of my friends that are also in the software industry.

The responses were overwhelmingly average, there were a lot of good points about usability that were brought up, as well as a handful of known issues. I’m currently mulling over these issues and recalling the the advice of Dharmesh Shah in his article about Startups and the Power of Polarization. This leads me to believe that another revision is in order. I’ve identified a number of key issues that I need to work on and I think it’s time to go back to the drawing board.

Reflections on IT Consulting

js0n — Mon, 09 Jun 2008 03:29:42 +0000

For some time now, I’ve been attempting to write a post expressing how I feel about IT consulting; sufficed to say, I am no longer an IT consultant. I don’t think there’s anything I can say about my stance on the topic that would be convincing without the reader having first hand experience, so here’s some of the material that I’ve come across that I found to be provocative.

I’ll leave it to the reader to form their own opinions on the topic.

Reminiscing A Snowboarding Injury

js0n — Thu, 22 May 2008 14:59:54 +0000

It’s been a while since my last post, so here’s a brain dump of everything that’s been going on recently.

I’ve been using Assembla to host my Mercurial repository as a bonus, it seem that they have Trac integration. My project is fast approaching its first milestone and I’m pretty excited about the new features that we’re working on for the next milestone.

Other than that I’ve been occupying my time some running and playing guitar. If you’re a guitar player, I highly suggest checking out the Rock House series of instructional videos. I’ve taken private lessons before, and I’d definitely say that these videos are far more engaging and help you progress faster.

For those of yo that know me, I’ve been undergoing physical therapy for a snowboarding injury that happened in December of last year. Should you be interested in snowboarding, I do not recommend getting your shoulder dislocated while doing so. Though I’ve been a snowboarder for a number of years, ever since sometime in high school if I recall, I’ve never really injured myself.

At first the experience of dislocating your shoulder seemed interesting, I wasn’t doing anything particularly spectacular at the time of my injury. I recall being able to see the chalet and riding pretty fast and then suddenly I was on the ground. Upon trying to get up, I realized I couldn’t move my right arm, which was fairly numb, so the pain hadn’t started to kick in yet. Both my girlfriend and friend were with me at the time and they graciously offered to drive me to the hospital after the field medics concocted a makeshift sling for my arm. At the hospital, I was notified that I was something like the hundredth snowboarding injury they received on that particular day; I detected a note of disdain from the people in the emergency room whom had obviously seen too many self-inflicted snowboard injuries that day. The pain started getting worse while waiting in line in the emergency room for a doctor, but I’d say the most interesting part of the experience was getting your shoulder popped back in. It wasn’t what I expected; I think I’ve been brainwashed by action movies, because they popped it back in not by quickly jerking my right arm, but by slowly raising it overhead until there was a loud snapping noise followed some exacerbated profanity on my part.

All things considered, the experience of dislocation and relocation wasn’t so bad; however, physical therapy for this particular injury has been the most excruciatingly painful thing that I’ve had to endure and it has been going on for several months now. Although I have a greater range of motion than immediately after my sling came off after my injury, whenever moving my arm to an extreme orientation, muscles begin to shake which is not at all pleasant. In particular, I have not so fond memories of my physical therapist working on my exterior rotation.

On a completely unrelated note, a friend of mine from university submitted a video called ‘Velcro shoes’ for a contest sponsored by Microsoft; you can find it here.

A Brief Interlude

js0n — Mon, 28 Apr 2008 06:41:32 +0000

Earlier this week, I had a visit from one of my good friends with whom I’ve worked on a large number of projects with over the years; most notably, we worked on a real-time operating system kernel running a model train simulation. I asked him to collaborate with me on my current project and perhaps throw some new ideas into the mix while doing some random development.

One very interesting idea that came up was a physical caching system for warehouses. Based on a number of orders that would be received from a large warehouse that was required to move inventory according to a schedule, we predicted that it would be possible to reduce the amount of travel time spent by individual workers by working out an algorithm for placing items that were more often requested closer to the shipping dock. We realized that a warehouse was very much like a multi-threaded threaded application, with obvious elements of uncertainty that come into play. However, we abandoned this idea after some time because our estimates predicted only a nominal improvement in their order fulfillment process.

We concluded that some more research had to be done regarding supply chain management and existing ERP systems. This is an article that I came across while doing this research; it superficially depicts some of the processes employed by Amazon’s warehouses.

Bjarne Stroustrup @ UWaterloo

js0n — Mon, 28 Apr 2008 06:15:47 +0000

A friend of mine recently notified my that Bjarne Stroustrup, creator of the C++ language, gave a talk about the new features introduced in the C++0x standard. A video of this talk can be seen here.

The talk is hosted by the CS Club at my alma mater; it is one in a number of very interesting video and audio clips that the club hosts here. Amongst my favourite are the sessions hosted by economist Larry Smith, who delivers some stirring lectures about business and technology.

OpenCV Framework for Computer Vision

js0n — Sun, 20 Apr 2008 07:10:37 +0000

I ran across this article and thought it’d be cool to try out that script on my machine. After playing around with trying to compile xawtv on my machine, I ended up just just taking a snapshot with the built-in iSight on my Macbook Pro and feeding it into the script. The script doesn’t do much more than make an API call to OpenCV; some more investigation into the OpenCV framework reveals some interesting documentation, here. I’ve found that the framework is pretty good at detecting upright faces, but the algorithm seems to have more trouble detecting a tilted head.

As a note to anyone else trying this on a Mac, there’s some work involved in trying to get the script in this article to compile. Xawtv seems to require the ‘soundcard.h’ or ‘sys/soundcard.h’ header for compilation. As I understand it, these headers define a number of constants required by the Open Sound System (OSS) API. Even after defining these constants, I believe there were some further unresolved symbols required by xawtv, as of version 3.95. I ended up switching to gstreamer since it was readily available via macports.

Mercurial for Distributed Source Control

js0n — Tue, 15 Apr 2008 20:40:14 +0000

A friend of mine turned me on to the distributed version control system Mercurial. It looks pretty awesome; the main selling point for me was the ability to host a source repository in a decentralized fashion. Other things that I thought were cool were the ability to work offline and the integrated web server that allows you to publish your local repository. I’ve found these links useful in my investigations:

I’ve also attempted to find a good Mac OS X GUI for Mercurial, one that looked promising was the Mercurial Eclipse plug in, but I found this to be somewhat cumbersome; I ended up reverting to the command line.

Taking the Leap

js0n — Wed, 02 Apr 2008 17:19:35 +0000

Last week was one of the defining moments of my life; for various extenuating circumstances, I decided to part ways with my employer and follow the dreams of many a programmer by venturing out into the world of software entrepreneurship. I received much positive support from people I trusted and set forth to realize an idea that I’ve been sitting on for a while.

The first step in removing myself from the shackles of corporate servitude was to move out of the corporate apartments and onto the couches some very accommodating friends of mine (thanks guys). For the remainder of last week, I spent much time working on the initial code base for my idea. To provide some context, the idea that I had in mind was an impromptu event planner.

The pitch was that if you and a number of friends were bored and too indecisive to find something to do, you would simultaneously log into a planning session hosted by the site. The site would provide tools for collaboration so that all the details of an event can be concretely determined by the end of the planning session.

I received a lot of positive feedback from people I’ve met randomly at parties and colleagues that I’ve spoken to about the idea. I decided to go ahead and develop the idea further by starting some documentation about key features, existing competitors and some of the initial design work.

One of my colleagues suggested I go with him to the New York Web 2.0 Meetup. I’m glad I went because despite my prior research, I failed to identify one main competing company that had an implementation of a very similar idea. A company by the name of Pelago, led by some ex-Amazon engineers, has developed an awesome product by the name of whrrl.com. It has integration with Blackberry phones and by the looks of their job opportunities page, will be expanding into the iPhone domain soon.

I’m currently doing a lot of reading and working on refining some more of my ideas.