Index - R
| Ratio | Base, Universum |
| Rational | Base, Universum |
| ratioPrec | Base, Universum |
| ratioPrec1 | Base, Universum |
| ratioZeroDenominatorError | Base, Universum |
| Read | Universum |
| readEither | Universum |
| Reader | Monad.Trans, Monad, Universum |
| reader | Monad.Trans, Monad, Universum |
| ReaderT | |
| 1 (Type/Class) | Monad.Trans, Monad, Universum |
| 2 (Data Constructor) | Monad.Trans, Monad, Universum |
| readFile | Lifted.File, Lifted, Universum |
| readIORef | Lifted.IORef, Lifted, Universum |
| readMaybe | Universum |
| ReadMode | Universum |
| readMVar | Lifted.Concurrent, Lifted, Universum |
| reads | Universum |
| readTVar | Lifted.Concurrent, Lifted, Universum |
| readTVarIO | Lifted.Concurrent, Lifted, Universum |
| ReadWriteMode | Universum |
| Real | Base, Universum |
| RealFrac | Base, Universum |
| realToFrac | Base, Universum |
| recip | Base, Universum |
| reduce | Base, Universum |
| rem | Base, Universum |
| repeat | List, Universum |
| replicate | List, Universum |
| replicateM | Monad, Universum |
| replicateM_ | Monad, Universum |
| return | Monad, Universum |
| reverse | List, Universum |
| Right | Monad.Either, Monad, Universum |
| rights | Monad.Either, Monad, Universum |
| rightToMaybe | Monad.Either, Monad, Universum |
| rnf | Universum |
| round | Base, Universum |
| runExceptT | Monad.Trans, Monad, Universum |
| runIdentity | Universum |
| runIdentityT | Monad.Trans, Monad, Universum |
| runMaybeT | Monad.Trans, Monad, Universum |
| runReader | Monad.Trans, Monad, Universum |
| runReaderT | Monad.Trans, Monad, Universum |
| runState | Monad.Trans, Monad, Universum |
| runStateT | Monad.Trans, Monad, Universum |