I did something related to CoffeeScript before, namely simple command-line compiler. For those who are not aware of CoffeeScript, it’s basically (from Wikipedia) JavaScript with “syntactic sugar inspired by Ruby and Python”.

Judging from the hits, my blog post on lightning-fast project navigation in vim seems to be still popular. While the Project script is still my favorite these days, especially when dealing with hundreds of files, let me show you here another gem: Command-T script.

While I played with HSV pie and color wheel before, usually I just use the excellent Qt graphics stack to try out various things. This days, I lean towards using web technologies and for that purpose, HTML Canvas suits me just fine. With PhantomJS, I even got the result rendered as PNG image.

Latest stable version of Chrome 9 now has built-in support for WebGL. Hopefully this would increase the amount of people trying out various cool 3-D stuff, from the infamous Aquarium demo to the fancy Jelly Fish animation, and many others.

PhantomJS is a headless WebKit packaged as a JavaScript-driven tool. It can be used in command-line utilities which requires web stack, or even as the basis for testing rich web application. It uses WebKit in a headless mode, so you get access to the real native and fast implementation (not a simula...

CoffeeScript seems to be picking up some momentum these days. No doubt, it is very valuable to help writing cleaner code.

It got started when I needed a new home for my examples. It has even a nice logo.

I already showed the use of device orientation in a fun game called Box of Marbles. Based on my experience trying out this API implementation, often it is easy to get confused by device motion vs device orientation. Thus, I created two web-based applications (using on Sencha Touch): Device Motion an...

What will occur when a software team is working on a project? How to tackle the change control?

Since coming back from Qt Developer Days 2010 in San Francisco (more precisely in Burlingame, near SF airport), one thought really bothered my mind: “when will Qt become ubiquitous?”.

Long live Calligra Suite!

In the past, I have done various research focusing in the photonics system. Here is a list of over 30 research papers published in major conferences and prominent journals.

Remember my Box of Marble demo?. It was a native Qt/C++ application running on Maemo-powered Nokia N900.

Disclaimer: Except otherwise noted, my activities around these projects are my own personal where my involvement is not necessarily endorsed, sponsored, encouraged, funded, nor recommended by my employer.

This is a (long) list of short examples I have published. They are related to C++, Qt, or WebKit in one way or another. For more serious code, check out my projects.

In the last few years, I have delivered 70+ technical presentations (averaging 4-star feedback) on various topics related to software engineering, presented to the audience of hundreds of passionate engineers. Check some of the highlights or scroll further to see the complete list.

Usually, you would want to use scripting solution, e.g. Perl/Python/whatever, to manipulate file contents. Somehow, it’s also fun to use JavaScript instead. After I did the V8-based jsbeautify, I was doing V8-based jslint as well. Then I realized, let’s just extend it to be generic. With API loosely...

Here is a few minutes of hack which would hopefully help someone else:

Remote feature of Web Inspector, whereby you use an instance of WebKit and debug another one in different machine, is one important feature (that is being worked on) of WebKit I can’t wait to start using. Till that day, remote debugging is always a challenge. There are of course assorted workarounds...

If you can’t see the clock below, visit the stand alone demo.

Take a look at the following CSS 3 demo. No Flash. No JavaScript. No image.

We heard that Munich Qt Developer Days was an awesome event, which is why I look forward to the San Francisco Qt Developer Days, which will be held November 1-3.

Are you in the Bay Area? Don’t miss our Sencha Touch Hackathon this Saturday (Oct 16) in our Palo Alto Office, 1pm to 5pm. There will be food and drinks as well.

While we’re still on the topic of JavaScript, I took the afternoon break to create a command-line runner for jsbeautifier.org . In case you miss it, I did the similar thing using Qt Script module. This time however, the command-line tool uses and exploits Google V8 instead.

If you are using a modern browser, likely you already have the (arguably) most widely deployed scripting environment: JavaScript engine (or ECMAScript, if you insist). There are many things you can do with it (just look at tons of cool web apps out there). However, since it is contained in the brows...

’nuff said, head to www.sencha.com/contest!

Something I worked on during my last few weeks with Qualcomm was color inversion for the web browser in Android. The patch was then integrated by Enrico (see the diff) because I switched job.

Fermi problem of the day, anyone?

Developing games using HTML5 Canvas and JavaScript is simply the future. Something classic like Egor Balishev’s RGB Invader, an entry in the 10K Apart, is usually my favorite.

There are many different ways to autoformat JavaScript code, my favorite is always jsbeautifier.org. Apparently, you can also use it locally without a web browser since it supports running it with Rhino.