This is great. Every developer should be familiar with writing C and how to hook into it from higher-level languages (Ruby, Python, etc). This is a VERY powerfu

This is great. Every developer should be familiar with writing C and how to hook into it from higher-level languages (Ruby, Python, etc). This is a VERY powerful combination. C isn't appropriate for everything these days, but it can kick ass and take names at very specific tasks that need performance or access to OS primitives.