Index - D
| Day | Prolude.Time, Prolude |
| DefaultOrdered | Prolude.Csv, Prolude |
| defaultTimeLocale | Prolude.Time, Prolude |
| DiffTime | Prolude.Time, Prolude |
| displayException | Prolude.Exception, Prolude |
| div | Prolude.Core, Prolude |
| divMod | Prolude.Core, Prolude |
| Double | Prolude.Core, Prolude |
| drop | Prolude.Core, Prolude |
| dropWhile | Prolude.Core, Prolude |