Index - U
| uncons | Universum |
| uncurry | Universum |
| undefined | |
| 1 (Function) | Base |
| 2 (Function) | Debug, Universum |
| UndefinedElement | Universum |
| Underflow | Universum |
| unfoldr | Universum |
| unGetChan | Universum |
| uninterruptibleCancel | Universum |
| uninterruptibleMask | Universum |
| uninterruptibleMask_ | Universum |
| unless | Monad, Universum |
| unlessM | Bool, Universum |
| Unmasked | Universum |
| unsafeFromJust | Unsafe |
| unsafeHead | Unsafe |
| unsafeIndex | Unsafe |
| unsafeInit | Unsafe |
| unsafeLast | Unsafe |
| unsafeTail | Unsafe |
| unsafeThrow | Unsafe |
| unsnoc | Universum |
| UserInterrupt | Universum |