Index - U
| unicodeCategories | Data.CharSet.Unicode | 
| UnicodeCategory | |
| 1 (Type/Class) | Data.CharSet.Unicode | 
| 2 (Data Constructor) | Data.CharSet.Unicode | 
| unifiedCanadianAboriginalSyllabics | Data.CharSet.Unicode.Block | 
| union | Data.CharSet | 
| upper | |
| 1 (Function) | Data.CharSet.Common | 
| 2 (Function) | Data.CharSet.Posix.Ascii | 
| 3 (Function) | Data.CharSet.Posix.Unicode | 
| uppercaseLetter | |
| 1 (Function) | Data.CharSet.Unicode | 
| 2 (Function) | Data.CharSet.Unicode.Category |