andy's 31337 geek blog

A P2P Program in 15 Lines of Python!

2006-05-12T08:45:00.000+08:00

TinyP2P is the world's shortest P2P program; written in Python.

AJAX for Python

2006-03-13T10:45:00.000+08:00

Python is my favorite agile language. There is a ultra-easy to use Ajax framework that works with Coldfusion, Io, Lua, Perl, Python, and Ruby. It's call SAJAX.

digg the new slashdot?

2006-03-13T09:44:00.000+08:00

Have you digg for stories lately?

Run Linux from USB Drive!

2006-03-13T09:37:00.000+08:00

If your USB "finger" is 512M or more you can run Linux. Read this step-by-step guide to installing Linux onto your USB drive.

Web 2.0 Meme Map

2005-11-10T13:30:00.000+08:00

Hey, download this new Web 2.0 Meme Map - adapted from O'Reilly's 2005 conference. (BTW, if you don't know what Web 2.0 is, it's time to find out!)

Using AI and learning to generate ringtones

2005-10-24T16:08:00.000+08:00

Unique ringtones for free; created automatically with Mathematica!

Source for a C# compiler written in C#

2005-09-26T16:10:00.000+08:00

A bit out-dated, but still interesting example of C# coding - C# blue - a C# compiler written in pure C#!

LINQ and C# 3.0

2005-09-26T15:51:00.000+08:00

Hey here is a cool blog on LINQ - Language INtegrated Query by Dan Fernandez.

Y combinator in Javascript

2005-09-26T11:35:00.000+08:00

As you might know the fix point combinator of a function is another function that is left unchanged by further applications of the fix point combinator. This is also known as the Y combinator.

A function, often denoted Y, which computes a fixed point of any function it is given. Y is a function with the property that f(Y(f)) = Y(f) for all functions f.

In JavaScript, it is:


function Y(le) {
    return function (f) {
        return f(f);
    }(function (f) {
        return le(function (x) {
            return f(f)(x);
        });
    });
}

With this, factorial can be defined as:


var factorial = Y(function (factorial) {
    return function (n) {
        return n <= 2 ? n : n * factorial(n - 1);
    };
});

var number120 = factorial(5);

More info at The Little JavaScripter.

Eric Raymond's books

2005-09-03T16:44:00.000+08:00

If you are a fan of Eric Raymond, you will be happy to know that some of his books are free online! For example, the Cathedral and Bazaar, the Art of Unix Programming, etc. I particular like the AI Koans as well as the Unix Koans.
http://www.catb.org/~esr/writings/

Personal Wiki

2005-09-03T16:41:00.000+08:00

Hey, new semester and I'm re-starting to update my 31337 blog. My first entry this academic year is a tool to help you organize your personal information. It is a Wiki written totally in Javascript for client-side execution!
http://shared.snapgrid.com/gtd_tiddlywiki.html

Have Fun!

Cool Tool for Online Slide Show

2005-04-11T22:13:00.000+08:00

I you want to put Powerpoint-like material online, you should take a look at S5. It is really cool - simle XHTML+CSS and a bit of Javascript goes a long way! Supports Opera Show Format as well.

Anyone Wants D for Programming?

2005-04-01T10:32:00.000+08:00

Hey here is a really neat language that has a lot of features not found in C, C++, Java or C# (comparison matrix) - it is called D. Digital Mars also have free compilers for D, C, and C++.

Sun's next new language - Fortress

2005-04-01T10:22:00.000+08:00

Guy Steele is designing a new language for scientists (to replace Fortran) called Fortress. I can't find the website for the language itself though...

.NET Languages

2005-03-30T11:04:00.000+08:00

F# version 1.0 is now released! If you want to know more about .NET languages, check out this list. Also, there is a new PHP for .NET called Phalanger, which allows you to run PHP on a ASP.NET server!

What Skills a Hacker Needs?

2005-03-11T13:03:00.000+08:00

If you want to work in US, this article by devnulled summarizes the top skills companies are asking for.

Want to Create Some Data Structures in C# 2?

2005-03-11T13:01:00.000+08:00

Read this extensive short course on data structures with C# 2.0 by Scott Mitchell of 4GuysFromRolla.com

Visualizing What a Computer is Thinking

2005-02-18T12:21:00.000+08:00

Cool graphics to show what a chess program is thinking.

Everything You Ever Wanted to Know About Function Pointers!

2005-02-15T15:30:00.000+08:00

I found this amazing tutorial on C/C++ function pointer by Lars Haendel

Drap and Drop an App from Browser to Desktop?

2005-02-01T16:48:00.000+08:00

Rich internet application is the new trend. Technologies like droplet might be a win.

Easiest Most "Natural" Way to Documenting Source Code

2005-02-01T16:43:00.000+08:00

I think NaturalDocs is the easiest way to document source... so "natural" :-)

Topicalisers and Improved Arrows

2005-01-27T16:05:00.000+08:00

Cool reading on Perl 6's new topic and topicalisers as well as the improved arrows.

Artsy Python Hackers

2005-01-27T10:42:00.000+08:00

These guys must be the coolest. Check out their free Python source code - letterror

Doing Research

2005-01-26T01:05:00.000+08:00

If you are a student, you might be interested in Google Scholar, let's you search for research papers. Here are some of mine.

New Video Searches

2005-01-25T23:48:00.000+08:00

Hey it has been a while since I blogged on this site. Been too busy with work. But today Google just came out with Video search that I must blog about. It allows you to search within the spoken text of the video! Blinkx does something similar but not as well. Other video search engines only use techniques similar to image search. For example, Yahoo video.