ats will probably be an interesting best-of-both-worlds third option soon, though from what little I've seen of it it is currently harder to write code in than

ats will probably be an interesting best-of-both-worlds third option soon, though from what little I've seen of it it is currently harder to write code in than either haskell or c. but once you do put the work in to write your proofs etc. both correctness and speed should fall out naturally.