Five '+++++.' groups, cumulative accumulator 5+10+15+20+25 = 75.
This is a brainfuck *subset* — only > < + - . (no [ ] looping). That's
intentional: the goal is to stress imperative idioms that the recently
added Array module + array indexing syntax + s.[i] make ergonomic, all
in one program.
Exercises:
Array.make 256 0
arr.(!ptr)
arr.(!ptr) <- arr.(!ptr) + 1
prog.[!pc]
ref / ! / :=
while + nested if/else if/else if for op dispatch
25 baseline programs total.