I like it, but to do fizzbuzz in this way, you'd have to separate what's inside the loop into a reused function.

I think it's sort of obvious that the limit to this general rule is when data dependencies between fors and ifs forbid you from pushing things further up/down.

Or just use lazy list operations with a single if test at the end:

https://github.com/taolson/Admiran/blob/main/examples/fizzBu...

/s