until -package:numeric-prelude -package:streaming -package:util -package:snap-core -package:base -package:hedgehog -package:hledger-web -package:scalpel -package:LambdaHack 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.