Lifestream

When I started this blog, I didn't expect very much in the way of comments or trackbacks. I also didn't expect any spam, which means I didn't take any precautions. I mean, how would anybody even know about this blog?

Silly, silly me.

So, I have turned off comments and trackbacks until I figure out a reasonably reliable way of separating the spam from the ham. This will probably entail a bit of a rewrite of YAWT as I figure out a way to do this in a clean and modular manner. Why make it easy on myself when I can make it hard?

Read more »

Okay, this won't be the most exciting entry in the world. There are several different ways of logging or recording errors and warnings in perl, and I find I easily get confused. So this entry will serve as a very, very basic reference for me. Other people may find it useful. Or not.

Taken from the Perl 5.10.0 documentation:

Outside an eval, prints the value of LIST to STDERR and exits with the current value of $! (errno). If $! is 0 , exits with the value of ($?>> 8) (backtick command status). If ($?>> 8) is 0, exits with 255. Inside an eval(), the error message is stuffed into $@ and the eval is terminated with the undefined value. This makes die the way to raise an exception.

Read more »

This will be a short entry. The Montreal Canadians won the playoffs last night and some fans took this as an excuse to act like criminals.

I just wanted to voice my extreme displeasure, for what it's worth. It's a game people. Get a fucking clue. And we won, morons.

Read more »

In a previous blog entry, I described various solar system simulations I played around with in high school. These were perhaps more properly termed "gravity simulations" since what I simulated was not a solar system per se but rather Newton's laws of gravity and motion as applied to a bunch of swirling rocks, which would produce a solar system if the conditions were set up correctly. The orbits that you saw in these programs appeared naturally out of the math, as emergent properties of the equations - they were not explicitly programmed.

Read more »

So I got myself a new weblog, hosted on Netfirms. I'm not particularly enjoying the Netfirms experience, but it was only $10 for a year and I get SSH access. They're quite skimpy with the perl modules, forcing me to install a bunch of stuff in my home directory.

I'm using a homemade blogging program because I got tired of blosxom's ugliness and I didn't really like what I saw of Bryar. I'm calling it YAWT in my head - short for Yet Another Weblog Tool. I'm hoping to extend it at some point to handle photo galleries in a seamless and efficient manner - my last attempt to write an online photo manager was quite slow. We'll see.

Read more »

I've been recently spending a significant amount of my free time watching "Buffy the Vampire Slayer" and "Angel" on DVD. I never watched them when they were on the air, but now I'm catching up.

This has earned me accusations of being hypocritical, since I apparently tend to be critical of people who spend (what I consider to be) too much time watching TV.

Well...yes and no. I don't think I'm critical of people who spend a lot of time watching TV. How could I be? I watch a lot of TV myself. I am, on the other hand, critical of people who spend a lot of time channel surfing.

Read more »

I just read a very clear tutorial on Perl scoping mechanisms:

http://perl.plover.com/FAQs/Namespaces.html

I often get bitten by scoping issues but unfortunately (or fortunately?) it's usually easier in Perl to work around your problem than to understand the reasons behind it.

One part I found interesting was the section labelled "The Current Package" which explains the use of the package command in Perl. There is a tendency (or, at least, I have a tendency) to conflate the use of the Perl package command and, say, the use of the Java package declaration because they are often used to achieve the same effect, namely the separation of namespaces, and also because, by convention, they are used in a syntactically similar way. Because of this, it is easy to forget that the package command in Perl is just that: a command. You can call it from anywhere, multiple time from the same file even, and the effect is simply to change the current package - which in itself doesn't have a huge effect on how you write your code, just the way to access your variables.

Read more »

When I was in high school, I used to program two dimensional solar system simulations for fun (as you can surely tell, I was extremely popular and desired by all the ladies far and wide). I would put a "sun" in the middle of the screen and I'd spin "planets" around in simulated orbits.

There are essentially two ways you can go about programming solar system simulations. Technique 1, which for lack of a better term I will call the explicit technique, means deciding (or realizing) at the outset that the orbits of your planets will be elliptical, and then writing your program based on that. The explicit technique works because there are certain exploitable patterns in elliptical planetary orbits that can be harnessed to great advantage. Planets move faster when they are closer to the sun, for example, and slower when they are further away, in mathematically determined ways. One can derive formulae for the position of the planet on the orbit versus time.

Read more »

Cheesy title, I'm aware, but Montreal just got something like 30-60 cm of snow, depending on which weather report you read, and it's gorgeous.

I live on the 26th floor of my apartment building and from up there it's a bit difficult to see just how much snow we got. I get to the street level this morning and I see snow banks higher than my waist. I don't remember having this much snow since I was in primary school, and I was smaller then so my memories might be playing tricks on me.

I'm sure there's a lesson in all of this about global warming (why is it that I can't recall snowbanks this high in such a long time?), but for the moment it's nice. We might just get a white Christmas this year.

Read more »

Someone at work commented that, one night, she got into a long rambling discussion about the intersection between art and science. I said that art and science don't intersect, and she said she disagreed.

It's possible that there is a disagreement over terminology. When one says that art and science "intersect" I have in my mind some kind of act that combines the two, i.e. discovering some objectively reproducible feature of the universe by painting a nice picture would count as an intersection between art and science because by doing one, you're doing the other.

Read more »

I went to my friend Neil's bachelor party last Saturday (July 28th). I met the group at the Saint-Sulpice around 2:30pm and I didn't leave till 10:20pm or so. It was a fun day.

It ended up being a kind of a mini pub crawl, and one of the places we ended up was Foufounnes Electriques, a punk bar on Saint-Catherine Street. I had been in there only once before but it was only now that I actually noticed the decor and ambiance.

Something about the whole experience rubbed me the wrong way. An easy explanation would be the death metal music playing on the speakers, but I don't think that was it. I'm not a fan of death metal, but I'm not anti death metal either. Maybe it was the art on the wall. There was one of white clothes on a clothesline splattered in blood, another of a man wailing whilst holding his dead son in his arms, and yet another of some sort of crime/death scene, with blood pooled on the ground. Are you detecting a theme? So was I.

Read more »

Evelyn's birthday passed a few months ago. We were at a bar with her friends and I somehow got into a discussion with some guy about the nature of seeing green.

I'm sure the thought has run though many people's heads in some form or another. It basically goes like this: what if your green is not my green? Ignoring colour-blindness, when I look at the grass I register it as "green" and so do you. We are both, of course, able to verbalize this, but there's no way to tell if we're really seeing the same "green". What if "green" to you is really what I consider to be "red"? There'd be no way of knowing - you'd still call it "green", it's still the colour we both associate with grass, etc.

Read more »

At the moment I'm using blosxom to generate this blog. I'm using blosxom for the following reasons:

the HTML is completely under my control.

there is no database or PHP required.

the codebase is tiny, which means I have a better chance of fixing whatever problems crop up and also of integrating it into my site.

So far, it seems to work okay. My blog looks more or less the way I want it to. More specifically, it looks like it's a seamless part of my web site, which is exactly the effect I was after.

That being said, I'm finding that blosxom has a few warts:

Read more »

I'm using Markdown to write this blog entry. I've converted all my other entries to use Markdown as well. Markdown is cool.

One of the annoying things about Blosxom (and perhaps other blogging tools) is the need to write the entries in HTML. Now, I have nothing against HTML and, as I've mentioned before, I insist on having full control over the HTML that gets used on my site, especially for layout purposes. But for writing actual text, I find the markup a bit tedious, especially since I always end up using the same tags over and over again.

Read more »

I won a trip on a glider. I took these pictures through the sweat on my palms and forehead.

17 photos

Several months back I won a free gliding session with Vol Recreatif in a raffle. My natural laziness, combined with my nervousness about heights, combined with the fact that gliding is only fun if you have good weather, meant that I only managed to get myself to the airfield this past Saturday with the help of a friend of mine who actually has a car.

First things first: air gliding is not hand gliding. You are not exposed to the air. You and a pilot are seated in what looks like a single wheeled airplane with no engine. You're towed to a certain height by an actual (old, rickety, propeller-driven) airplane and then released to coast and drift gently back down. The whole thing takes maybe thirty minutes.

Read more »

English spelling is notoriously...arbitrary. Any and all attempts to pin down a spelling rule will be met with at least six different exceptions - and you can be sure that the exceptions will be words that you will actually want to use. A study in English spelling is basically a study in evolutionary history. It's a study of various French invasions and vowel shifts. And, most of all, it's an exercise in brute memorization.

Contrast this with mathematics. Useful mathematical results are derived from previous mathematical results, using nothing but pure logic. A mathematical result is what it is because it had to be that way. A mathematical result simply couldn't be anything else and still make sense. Note that this is, more or less, the exact opposite of what one can say about English spelling conventions.

Read more »

I have strong opinions on certain topics, but unlike some people I know, I try to justify my opinions (see, for example, my philosophy page). Whether I succeed or not is another matter, but I think that the attempt at justification deserves at least some credit. And I've been known to change my mind if I'm convinced I'm wrong.

I take a somewhat dim view of the idea that all opinions matter, or that no one is ever wrong. I know at least one or two people who seem offended whenever anyone tried to point out flaws in their ideas. I think this goes beyond not being able to handle criticism; they are of the belief that every opinion has a bit of right in it. I know other people who consider it the height of rudeness to try and convince another person to change his or her beliefs. There's a tendency today to treat opinions like an outgrowth of your body, like a limb, and to equate the desire to change it with the desire to cut off one's hand. With this sort of attitude, one does not debate so much as exchange ideas.

Read more »

So I've finally gotten a blog. They've only been around for, what? Ten years? I guess I'm not a bandwagon jumper.

Lately though, there've been a couple of instance where a) I've had an opinion that I wanted to share with the world and b) I didn't feel like writing a full-blown essay to express it. I guess this is where a blog fits the bill.

Anyway, after reviewing various blogging options I've finally settled on Blosxom as my blogging tool. At the moment I think this is the best option for me because:

Read more »

I visited my sister, who used to live in the Middle East, in 2005. I also took the oppourtunity to visit a bit of England while I was at it.

I went to stay in Quebec for a couple of days in Summer, 2004. Beautiful place.

20 photos

I took a three week tour of to France in 2003