Index - N
| Natural | RIO |
| negate | RIO |
| new | RIO.Vector |
| newBroadcastTChan | RIO |
| newBroadcastTChanIO | RIO |
| newChan | RIO |
| newEmptyMVar | RIO |
| newEmptyTMVar | RIO |
| newEmptyTMVarIO | RIO |
| newIORef | RIO |
| newLogFunc | RIO |
| newMVar | RIO |
| newSomeRef | RIO |
| newTBQueue | RIO |
| newTBQueueIO | RIO |
| newTChan | RIO |
| newTChanIO | RIO |
| newTMVar | RIO |
| newTMVarIO | RIO |
| newTQueue | RIO |
| newTQueueIO | RIO |
| newTVar | RIO |
| newTVarIO | RIO |
| newUnboxedSomeRef | RIO |
| newURef | RIO |
| NFData | RIO |
| NoBuffering | RIO |
| noLogging | RIO |
| nominalDay | RIO.Time |
| NominalDiffTime | RIO.Time |
| NonSpacingMark | RIO.Char |
| NoPathFound | RIO.Process |
| normalise | RIO.FilePath |
| not | RIO |
| NotAssigned | RIO.Char |
| notElem | |
| 1 (Function) | RIO.List, RIO |
| 2 (Function) | RIO.ByteString.Lazy |
| 3 (Function) | RIO.ByteString |
| 4 (Function) | RIO.Vector.Unboxed |
| 5 (Function) | RIO.Vector.Storable |
| 6 (Function) | RIO.Vector.Boxed |
| 7 (Function) | RIO.Vector |
| Nothing | RIO |
| notMember | |
| 1 (Function) | RIO.Map |
| 2 (Function) | RIO.Set |
| nub | RIO.List |
| nubBy | RIO.List |
| nubOrd | RIO |
| null | |
| 1 (Function) | RIO.List, RIO |
| 2 (Function) | RIO.ByteString.Lazy |
| 3 (Function) | RIO.ByteString |
| 4 (Function) | RIO.Map |
| 5 (Function) | RIO.Seq |
| 6 (Function) | RIO.Set |
| 7 (Function) | RIO.Text.Lazy |
| 8 (Function) | RIO.Text |
| 9 (Function) | RIO.HashSet |
| 10 (Function) | RIO.HashMap |
| 11 (Function) | RIO.Vector.Unboxed |
| 12 (Function) | RIO.Vector.Storable |
| 13 (Function) | RIO.Vector.Boxed |
| 14 (Function) | RIO.Vector |
| Num | RIO |
| NumericPadOption | RIO.Time |