Index - D
| decodeFloat | CorePrelude, BasicPrelude |
| decodeUtf8 | BasicPrelude |
| delete | BasicPrelude |
| deleteBy | BasicPrelude |
| deleteFirstsBy | BasicPrelude |
| displayException | CorePrelude, BasicPrelude |
| div | CorePrelude, BasicPrelude |
| divMod | CorePrelude, BasicPrelude |
| doesNotExistErrorType | CorePrelude, BasicPrelude |
| Double | CorePrelude, BasicPrelude |
| Down | |
| 1 (Data Constructor) | CorePrelude, BasicPrelude |
| 2 (Type/Class) | CorePrelude, BasicPrelude |
| drop | BasicPrelude |
| dropWhile | BasicPrelude |
| dropWhileEnd | BasicPrelude |