2024-03-26 00:00
Late last year, I read a few blog posts that said something like “everyone knows that bytecode interpreters are faster than tree-walking interpreters”. And then I saw the paper A… Read More
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A blog about programming, usability, and human-computer interaction.
2024-02-12 00:00
I’ve got three young kids. If you were to spend a day in my house, one thing you’d notice is that there are a lot of alarms going off.
Time to leave for school. Time to brush tee… Read More
2024-01-22 00:00
Last Monday, I found myself standing in front of eight kids, trying to explain what a y-coordinate is.
“Um, it’s kinda like a street address…?”
How did I end up ther… Read More
2023-12-28 12:48
It’s 2004 and I’m sitting in one of the largest lecture halls at my university. I’m a computer science major but I’m taking a course on natural history — plants… Read More
2022-11-01 14:00
Self is a prototype-based dynamic object-oriented programming language, environment, and virtual machine centered around the principles of simplicity, uniformity, concreteness, and liveness… Read More
2022-04-28 19:20
In the fall of 2003, I started an eight-month internship at IBM Ottawa that would later turn into my first full-time job as a software developer. I had joined the J9 Java VM team to work on… Read More
2022-03-21 14:00
Many programmers subscribe to the belief that they need large blocks of uninterrupted time to get anything done. Paul Graham wrote about this in Maker’s Schedule, Manager’s Sched… Read More
2022-02-15 14:00
Note: this is a follow-up to Three ways of handling user input. You should read that article first if you haven’t already!
In my last post, I looked at three different ways of handli… Read More
2022-01-05 09:55
Although there has been important progress in models and packages for the output of graphics to computer screens, there has been little change in the way that input from the mouse, keyboard… Read More
2021-10-04 12:48
Ohm is a parsing toolkit for JavaScript, which I’ve been working on together with Alex Warth since 2014. Today we’re announcing Ohm v16.0.0! 🥳
Improved TypeScript support… Read More
2021-01-10 00:00
Ohm is an open-source parsing toolkit for JavaScript which Alex Warth and I have been working on since 2014. You can use it to parse custom file formats or quickly build parsers, interpreter… Read More
2020-05-02 00:00
CDG (later known as HARC) was a short-lived research organization, founded by Alan Kay, where I was privileged to work from 2014-2017. As part of Alex Warth’s team, my research was mos… Read More
2017-04-23 12:25
After an unexpectedly early arrival of summer weather in Munich, things have predictably regressed to the mean. Grey skies, rain, snow, and—as I write this, hail—means not feelin… Read More
2017-03-20 00:00
Cognition in the Wild, which I read last year, is one of those books that can change the way you see the world. In one of my favourite passages, Hutchins talks about the slide rule:
The sli… Read More
2016-12-09 11:36
In his 1992 thesis, Alan Bawden wonderfully describes why it’s so hard to pin down the meaning of “state” in programming:
In cases where state cannot be eliminated, it beh… Read More
2016-09-01 09:16
React is a JavaScript UI framework that’s gotten pretty popular in the last few years. Due to this popularity, you’ll run across lot of conflicting (and sometimes misleading) des… Read More
2016-05-05 16:18
Since joining the Communications Design Group almost two years ago, I’ve found
it a bit difficult to describe exactly what my job is. And since a few people
have asked me lately, I fig… Read More
2011-03-08 07:44
Lately I’ve been thinking a lot about notifications. A few weeks ago, I started using Beluga with some of my friends at work. Beluga is a great group messaging app; so nice that it&rsq&hell…Read More
2011-01-06 19:01
As a Python developer, sooner or later you’ll want to install a package from the Python Package Index. Unfortunately, this is not as simple as it could be. Most documentation tells you… Read More
2010-04-21 18:05
I mentioned it off-hand in a previous post, but thought I should mention it again:
If you’re interested in web browser user experience, take a look at Browser Bits, my little tumblelog… Read More
2006-06-07 11:16
Inspired by people like Bret Victor and Michael Fogus, I decided to put together a list of the best books and essays that I read this year. After sharing it with my colleagues at CDG, I thou… Read More
2006-06-07 11:16
One of my favourite bits of programming philosophy is Alan Kay’s famous email about the big idea of object-oriented programming:
I’m sorry that I long ago coined the term &ldquo&hell…Read More
2006-06-07 11:16
For the last couple of weeks, I’ve been working on converting this blog from
WordPress to a static site generated by some custom Python scripts. Yesterday,
I finally made the switch.
E… Read More
2006-06-07 11:16
Though I never made a formal announcement here, some of you may know that I joined the Android team at Google just over a year ago. Last week I had the privilege of speaking at Google I/O in… Read More
2006-06-07 11:16
In my previous post, I lamented the fact that mobile notifications can be totally annoying if they come at the wrong time. This was triggered by being woken up several times in the past few… Read More
2006-06-07 11:16
In the past few days, I’ve been playing with Sketch, a vector drawing application for OS X. There are lots of things to like, but one thing I found frustrating was how it implements al… Read More
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