Awesome! Where did the "split_ifs" tactic come from though? Mathlib? In your opinion does it make sense to do program verification without using Mathlib, or would you recommend just using it pretty much all the time?
Yes split_ifs is in Mathlib so I have replaced it with split (twice) which is in Core. I believe there is also an intermediate level Std. I'm not sure why you'd want to avoid Mathlib but I daresay it's possible for many types of problem.
alimw|2 years ago