Index - U
| uncons | PreludePlus |
| uncurry | PreludePlus |
| undefined | PreludePlus |
| unfoldr | PreludePlus |
| union | PreludePlus |
| unionBy | PreludePlus |
| unless | PreludePlus |
| unlines | PreludePlus |
| until | PreludePlus |
| unwords | PreludePlus |
| unzip | PreludePlus |
| unzip3 | PreludePlus |
| unzip4 | PreludePlus |
| unzip5 | PreludePlus |
| unzip6 | PreludePlus |
| unzip7 | PreludePlus |
| userError | PreludePlus |