| Off | Streamly.Internal.FileSystem.Event.Linux |
| On | Streamly.Internal.FileSystem.Event.Linux |
| once | Streamly.Internal.Data.Stream.StreamK, Streamly.Internal.Data.Stream.IsStream.Generate, Streamly.Internal.Data.Stream.IsStream, Streamly.Prelude |
| oneShot | Streamly.Internal.BaseCompat |
| onException | |
| 1 (Function) | Streamly.Internal.Data.Stream.StreamD.Exception, Streamly.Internal.Data.Stream.StreamD |
| 2 (Function) | Streamly.Internal.Data.Unfold |
| 3 (Function) | Streamly.Internal.Data.Stream.IsStream.Exception, Streamly.Internal.Data.Stream.IsStream, Streamly.Prelude |
| openFile | Streamly.Internal.FileSystem.FD |
| or | |
| 1 (Function) | Streamly.Internal.Data.Fold, Streamly.Data.Fold |
| 2 (Function) | Streamly.Internal.Data.Stream.IsStream.Eliminate, Streamly.Internal.Data.Stream.IsStream, Streamly.Prelude |
| ordering | Streamly.Internal.Data.Binary.Decode |
| outerJoin | Streamly.Internal.Data.Stream.IsStream.Top, Streamly.Internal.Data.Stream.IsStream |
| OuterLoop | |
| 1 (Data Constructor) | Streamly.Internal.Data.Producer.Type, Streamly.Internal.Data.Producer |
| 2 (Data Constructor) | Streamly.Internal.Data.Array.Prim.Pinned.Type |
| 3 (Data Constructor) | Streamly.Internal.Data.Array.Prim.Type |
| outputDoorBell | Streamly.Internal.Data.SVar |
| outputDoorBellFromConsumer | Streamly.Internal.Data.SVar |
| outputHeap | Streamly.Internal.Data.SVar |
| outputQueue | Streamly.Internal.Data.SVar |
| outputQueueFromConsumer | Streamly.Internal.Data.SVar |