I have a CS degree and a few years professional programming I have coded on-the-fly and I have coded from diagram first approaches. on-the-fly works for me wh

I have a CS degree and a few years professional programming I have coded on-the-fly and I have coded from diagram first approaches. on-the-fly works for me when there is an obvious data structure to work to, otherwise it takes a lot longer than planning it out because of all the edge cases