Index - F
| Fail | |
| 1 (Type/Class) | Data.Effect |
| 2 (Data Constructor) | Data.Effect |
| FailLabel | Data.Effect |
| FindBy | Data.Effect.OpenUnion |
| findBy | Data.Effect.OpenUnion |
| FindByLabel | Data.Effect.OpenUnion |
| FirstOrder | |
| 1 (Type/Class) | Data.Effect |
| 2 (Data Constructor) | Data.Effect |
| firstOrdership | Data.Effect.OpenUnion |
| Fix | Data.Effect |
| FixLabel | Data.Effect |
| FOEs | Data.Effect.OpenUnion |
| foldExpIndexShifter | Data.Effect.OpenUnion |
| foldHoeIndexShifter | Data.Effect.OpenUnion |
| FormCase | Data.Effect |
| FormOf | Data.Effect |
| Free | Control.Effect |