Interesting font choice for the code snippets. I wonder if that's been chosen on a whim or if there is a reason for not going with mono space.

The font used for code samples looks nearly the same as "The C++ Programming Languages" (3rd edition / "Wave") by Bjarne Stroustrup. Looking back, yeah, I guess it was weird that he used italic variable width text for code samples, but uses tab stops to align the comments!