Write clean code, by writing clean functions, understand what makes a makes a good function. In this vide you can see decisions made by an expert in the field as bad code is gradually transformed into good code. How big should a function be? How should it be named? How should it be documented. How many indent levels should it have? How should it deal with exceptions, arguments, and return values. This talk is all about code at the lowest level. And yet the principles and techniques presented have far reaching implications.