Zombies are a valuable tool for debugging memory management problems. I previously discussed the implementation of zombies, and today I'm going to go one step further and build them from scratch, a topic suggested by Шпирко Алексей.

It's Friday again, that Fridayest of days, and this week that means it's time for another Friday Q&A. Samuel Goodwin suggested discussing how NSZombie works, and that's the topic I will discuss today.