Interview Questions : tail recursion for C/C++ programmers

my latest essay talking about a (hard) interview questions on
Tail Recursion for C/C++ Programmers

Building A Data Structure With Expat and XML

A two part writeup on how to use the Expat XML parser library to populate C data structures.
Part 1
Part 2

C++, Java, Python, Ruby

An essay describing a first impression of the Python and Ruby languages written from the point of view of a C++/Java programmer.

NMEAP - nmea parser library

A standard C language parser library for reading and decoding NMEA-0184 output from pretty much any GPS unit with RS-232 output.