The teachers I had were often rather dogmatic, and out of touch with the last decade of developments. I'd listen to anything they say, but take it with a grain

The teachers I had were often rather dogmatic, and out of touch with the last decade of developments. I'd listen to anything they say, but take it with a grain of salt. Recursion is something you don't use so often, but it's a useful pattern for traversing trees. It has its uses, but it can make the code a bit harder to understand.