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