Yep. I don’t use NASA’s rules though, it was just an example. Like most of graphics research, flood fill is an algorithm you won’t ever see in a safety critical

Yep. I don’t use NASA’s rules though, it was just an example. Like most of graphics research, flood fill is an algorithm you won’t ever see in a safety critical environment like the space shuttle. And for better or worse, heap allocation is used in production code several orders of magnitude more often than recursion. Heap allocation was to be avoided when I was first working in games, but these days people use it all the time.