Index - E
| Either | Prolude.Core, Prolude |
| either | Prolude.Core, Prolude |
| eitherDecode | Prolude.Json, Prolude |
| elem | Prolude.Core, Prolude |
| encode | Prolude.Json, Prolude |
| Entity | |
| 1 (Data Constructor) | Prolude.Persist, Prolude |
| 2 (Type/Class) | Prolude.Persist, Prolude |
| entityKey | Prolude.Persist, Prolude |
| entityVal | Prolude.Persist, Prolude |
| Enum | Prolude.Core, Prolude |
| EQ | Prolude.Core, Prolude |
| Eq | Prolude.Core, Prolude |
| error | Prolude.Core, Prolude |
| even | Prolude.Core, Prolude |
| Exception | Prolude.Exception, Prolude |