until -package:numeric-prelude -package:util -package:xmonad-contrib -package:LambdaHack -package:language-bash -package:numhask -package:hosc -package:selective -package:base -package:monad-loops package:rebase
until p f yields the result of applying
f
until
p holds.
Keep running an effectful computation until it returns a
Right value, collecting the Left's using a supplied
Monoid instance.