RWS
scalaz
RWST
scalaz
Reader
scalaz
ReaderT
scalaz
ReaderWriterState
scalaz
ReaderWriterStateT
scalaz
raisedErrorsHandled
monadError
reflexive
equal
retention
lens
rightFM1Consistent
foldable1
rightFMConsistent
bifoldable
foldable
rightIdentity
category
divisible
monad
monoid
rightLeft
associative
rightPlusIdentity
plusEmpty
rightZero
monadPlus