Mounting HFS Plus with Read Write Enabled on Linux

Using information from the following links, I removed all references CFSwapInt32HostToBig and its dependencies and substituted CFSwapInt32HostToBig with bswap_32.

http://dmunsie.wordpress.com/code/hacks/

http://stackoverflow.com/questions/105252/how-do-i-convert-between-big-endian-and-little-endian-values-in-c/105339#105339

The program compiled (albeit with warning messages).

To run the program, simply use sudo ./a.out /dev/sdXX

where /dev/sdXX is the partition you need to mount.

Then you should be able to mount using the following
sudo mount -t hfsplus -o rw,user /dev/sdXX /media/hfspart

For your convenience, you may find my modified code at the following url:

http://pastebin.com/7rvxR38d

Playing with My New Arduino Kit

Image by lezioni di stile via Flickr

Recently I purchased an Arduino kit from Hacktronics.  I spent some time during spring break familiarizing myself with the the board and creating sample projects from the Getting Started with Arduino book.

So far I have learned how to use LEDs, push buttons, photoresistors, and thermistors.  I am thinking about creating an autonomous airplane or some other type of robot that can fly.

Below is a picture of a simple circuit I created using two resistors, a push button, some wires, a breadboard, and my Duemilanove Arduino board.  The source code may be found at http://pastebin.com/CpMcnsaW .

I found some good resources online that could help others get started:

Where to purchase Arduino boards/kits:

http://arduino.cc/en/Main/Buy

Using C programming with Arduino:

http://www.arduino.cc/playground/Main/DevelopmentTools

List of Arduino Links:

http://www.opencircuits.com/Arduino_Links

New UI in Development for iPhone Bookmark Reader

Today I began designing a new interface for the bookmark reader.  I am currently working on revamping the UI to be service independent.  I am planing on creating a plugin bundle system or CFPlugin system to save time when adding support for new services.

Update: I have decided to temporarily cease development on this project in order to focus on learning Lisp and to work through the SICP book.  I may end up resuming development on this project sometime next year…

Updates Coming to iPhone Bookmark Reader

I haven’t blog in a while due to some financial issues.  Now, that I have that resolved, I intend to blog regularly every Friday.

Today, I resumed working on my iPhone bookmark reader application.  Right now, I am working on taking site specific code out and making it modular.  I envision either writing a common interface for the bookmarking services I choose to support or simply creating separate classes for each website.  Some of the websites I plan to add over the next couple of weeks include: Digg, Reddit, and Diigo.  I also intend to add, as time permits, support for other sites such as: Yahoo Buzz, Stumbleupon, Mixx, Twine, Dzone, Twitter, and Facebook.

Time for Computer Science to Grow Up | August 2009 | Communications of the ACM

Time for Computer Science to Grow Up | August 2009 | Communications of the ACM

“Unlike every other academic field, computer science uses conferences rather than journals as the main publication venue. While this made sense for a young discipline, our field has matured and the conference model has fractured the discipline and skewered it toward short-term, deadline-driven research. Computer science should refocus the conference system on its primary purpose of bringing researchers together. We should use archive sites as the main method of quick paper dissemination and the journal system as the vehicle for advancing researchers’ reputations.”

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My iPhone Delicious.com Bookmark Reader Uploaded to Google Code

On Monday, July 6, 2009, I uploaded my delicious.com feed reader code to Google Code.  My application makes use of Multi-Views, UITextField, and UIPickerView.  I plan on making a few changes to the program sometime in August.  Some of which include:

1. Making the links clickable using the new UIDataDetectors.
2. Providing a way for users to add bookmarks.
3. Locating the user’s private key without the user having to manually enter it in.

Purpose of New Blog

I decided to create a new blog to document my explorations and experiments in the fields of mathematics and computer science for a few reasons:

1. It helps me to keep track of my progress as a computer scientist/hacker and mathematician.
2. It would serve as supplement to my resume.  A portfolio of sorts.
3. I can receive feedback from a wide variety of people on the internet.
4. I can document things I learn that may be helpful to fellow hackers and mathematicians.

Hello world!

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