until -package:numeric-prelude -package:yesod-paginator -package:prelude-compat -package:numhask -package:basic-prelude -is:exact -package:netwire -package:LambdaHack -package:IfElse -package:base-prelude -package:classy-prelude 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.