until -package:numeric-prelude -package:yesod-paginator -package:prelude-compat -package:numhask -package:snap-core -package:faktory -package:monad-loops -package:free -package:elerea -package:simple-prompt -package:base 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)