until -package:numeric-prelude -package:streaming -package:yesod-paginator -package:mixed-types-num -package:llvm-hs-pure -package:linear-base -package:intro -package:elerea -package:free -package:ghc -package:IfElse package:utility-ht
repeat action until result fulfills condition
Take all elements until one matches. The matching element is returned,
too. This is the key difference to
takeWhile (not . p). It
holds:
forAllPredicates $ \p xs -> takeUntil p xs == fst (breakAfter p xs)