A comparison like this would be much more informative if it used more than one layer of setup/cleanup. When you get to four or five, it really highlights how we

A comparison like this would be much more informative if it used more than one layer of setup/cleanup. When you get to four or five, it really highlights how well some of these scale up (or not). Also, neither nested functions nor mini state machines seem to get a mention, which is a shame. Nested functions are a good example of an approach that gets unwieldy fast as layers are added, and mini state machines scale as well as the "kernel" style without having to endure app-snobs' sneers for using a lowly goto.