Index - U
| uncons | Incipit, Prelude |
| uncurry | Incipit, Prelude |
| undefined | Incipit, Prelude |
| unEmbed | Incipit, Prelude |
| unfoldr | Incipit, Prelude |
| UnicodeException | Incipit, Prelude |
| unify | Incipit, Prelude |
| uninterruptibleMask | Conc, Polysemy.Conc |
| UninterruptipleMask | Conc, Incipit, Prelude, Polysemy.Conc |
| unit | Incipit, Prelude |
| unless | Incipit, Prelude |
| unlessM | Incipit, Prelude |
| unlines | Incipit, Prelude |
| untag | Incipit, Prelude |
| unwords | Incipit, Prelude |
| unzip | Incipit, Prelude |
| unzip3 | Incipit, Prelude |