Index - D
| D# | Base, Universum |
| decodeUtf8 | Conv, Universum |
| decodeUtf8' | Universum |
| decodeUtf8Strict | Conv, Universum |
| decodeUtf8With | Universum |
| deepseq | Universum |
| denominator | Base, Universum |
| die | Lifted, Universum |
| div | Base, Universum |
| divMod | Base, Universum |
| divZeroError | Base, Universum |
| Double | Base, Universum |
| Down | |
| 1 (Data Constructor) | Universum |
| 2 (Type/Class) | Universum |
| drop | Universum |
| dropWhile | Universum |
| Dual | |
| 1 (Data Constructor) | Universum |
| 2 (Type/Class) | Universum |
| dupChan | Universum |