Index - U
| uncons | Data.List.Extra, Extra | 
| uncurry | Data.Tuple.Extra | 
| uncurry3 | Data.Tuple.Extra, Extra | 
| UndefinedElement | Control.Exception.Extra | 
| Underflow | Control.Exception.Extra | 
| unescapeHTML | Data.List.Extra, Extra | 
| unescapeJSON | Data.List.Extra, Extra | 
| unfoldr | Data.List.Extra | 
| uninterruptibleMask | Control.Exception.Extra | 
| uninterruptibleMask_ | Control.Exception.Extra | 
| union | Data.List.Extra | 
| unionBy | Data.List.Extra | 
| unit | Control.Monad.Extra, Extra | 
| universalNewlineMode | System.IO.Extra | 
| unless | Control.Monad.Extra | 
| unlessM | Control.Monad.Extra, Extra | 
| unlines | Data.List.Extra | 
| Unmasked | Control.Exception.Extra | 
| unsetEnv | System.Environment.Extra | 
| unsnoc | Data.List.Extra, Extra | 
| unwords | Data.List.Extra | 
| unzip | Data.List.Extra | 
| unzip3 | Data.List.Extra | 
| unzip4 | Data.List.Extra | 
| unzip5 | Data.List.Extra | 
| unzip6 | Data.List.Extra | 
| unzip7 | Data.List.Extra | 
| upper | Data.List.Extra, Extra | 
| UseHandle | System.Process.Extra | 
| UserInterrupt | Control.Exception.Extra | 
| use_process_jobs | System.Process.Extra | 
| utf16 | System.IO.Extra | 
| utf16be | System.IO.Extra | 
| utf16le | System.IO.Extra | 
| utf32 | System.IO.Extra | 
| utf32be | System.IO.Extra | 
| utf32le | System.IO.Extra | 
| utf8 | System.IO.Extra | 
| utf8_bom | System.IO.Extra |