| UArray | Data.Array.Unboxed |
| UnExpect | Text.ParserCombinators.Parsec.Error |
| UndefinedElement | Control.Exception |
| Underflow | Control.Exception |
| UndoBegin | System.Console.Readline |
| UndoCode | System.Console.Readline |
| UndoDelete | System.Console.Readline |
| UndoEnd | System.Console.Readline |
| UndoInsert | System.Console.Readline |
| Uniq | Language.Haskell.TH.Syntax |
| Unique | Data.Unique |
| Unlock | System.Posix, System.Posix.IO |
| Unsafe | Language.Haskell.TH, Language.Haskell.TH.Syntax |
| UppercaseLetter | Data.Char |
| UserEntry |
| 1 (Type/Class) | System.Posix, System.Posix.User |
| 2 (Data Constructor) | System.Posix, System.Posix.User |
| UserID | System.Posix.Types, System.Posix |
| unGM | Data.Generics, Data.Generics.Aliases |
| unGQ | Data.Generics, Data.Generics.Aliases |
| unGT | Data.Generics, Data.Generics.Aliases |
| unGeneric' | Data.Generics, Data.Generics.Aliases |
| unGetChan | Control.Concurrent, Control.Concurrent.Chan |
| unGetTChan | Control.Concurrent.STM, Control.Concurrent.STM.TChan |
| unbindCommandInMap | System.Console.Readline |
| unbindKey | System.Console.Readline |
| unbindKeyInMap | System.Console.Readline |
| unblock | Control.Exception |
| unblockAsyncExceptions# | GHC.Exts, GHC.Prim |
| unblockSignals | System.Posix.Signals, System.Posix, System.Posix.Signals.Exts |
| uncheckedIShiftL# | GHC.Exts, GHC.Prim |
| uncheckedIShiftRA# | GHC.Exts, GHC.Prim |
| uncheckedIShiftRL# | GHC.Exts, GHC.Prim |
| uncheckedShiftL# | GHC.Exts, GHC.Prim |
| uncheckedShiftRL# | GHC.Exts, GHC.Prim |
| uncurry | Data.Tuple, Prelude |
| undefined | Prelude |
| undl | System.Posix.DynamicLinker |
| unexpected | Text.ParserCombinators.Parsec, Text.ParserCombinators.Parsec.Prim |
| unfoldForest | Data.Tree |
| unfoldForestM | Data.Tree |
| unfoldForestM_BF | Data.Tree |
| unfoldTree | Data.Tree |
| unfoldTreeM | Data.Tree |
| unfoldTreeM_BF | Data.Tree |
| unfoldr |
| 1 (Function) | Data.ByteString |
| 2 (Function) | Data.ByteString.Char8 |
| 3 (Function) | Data.ByteString.Lazy |
| 4 (Function) | Data.ByteString.Lazy.Char8 |
| 5 (Function) | Data.List |
| unfoldrN |
| 1 (Function) | Data.ByteString |
| 2 (Function) | Data.ByteString.Char8 |
| union |
| 1 (Function) | Data.IntMap |
| 2 (Function) | Data.IntSet |
| 3 (Function) | Data.List |
| 4 (Function) | Data.Map |
| 5 (Function) | Data.Set |
| unionBy | Data.List |
| unionFileModes | System.Posix, System.Posix.Files |
| unionWith |
| 1 (Function) | Data.IntMap |
| 2 (Function) | Data.Map |
| unionWithKey |
| 1 (Function) | Data.IntMap |
| 2 (Function) | Data.Map |
| unions |
| 1 (Function) | Data.IntMap |
| 2 (Function) | Data.IntSet |
| 3 (Function) | Data.Map |
| 4 (Function) | Data.Set |
| unionsWith |
| 1 (Function) | Data.IntMap |
| 2 (Function) | Data.Map |
| unless | Control.Monad |
| unlines |
| 1 (Function) | Data.ByteString.Char8 |
| 2 (Function) | Data.ByteString.Lazy.Char8 |
| 3 (Function) | Data.List, Prelude |
| unlinesPS | Data.PackedString |
| unmarshalObject | GHC.Dotnet |
| unmarshalString | GHC.Dotnet |
| unpack |
| 1 (Function) | Data.ByteString |
| 2 (Function) | Data.ByteString.Char8 |
| 3 (Function) | Data.ByteString.Lazy |
| 4 (Function) | Data.ByteString.Lazy.Char8 |
| unpackList | Data.ByteString, Data.ByteString.Char8 |
| unpackPS | Data.PackedString |
| unsafe | Language.Haskell.TH, Language.Haskell.TH.Lib |
| unsafeCreate | Data.ByteString.Base |
| unsafeDrop | Data.ByteString.Base |
| unsafeFinalize | Data.ByteString.Base |
| unsafeForeignPtrToPtr | Foreign, Foreign.ForeignPtr |
| unsafeForeignPtrToStorableArray | Data.Array.Storable |
| unsafeFreeze | Data.Array.IO, Data.Array.MArray, Data.Array.ST, Data.Array.Storable |
| unsafeFreezeArray# | GHC.Exts, GHC.Prim |
| unsafeFreezeByteArray# | GHC.Exts, GHC.Prim |
| unsafeHead | Data.ByteString.Base |
| unsafeIOToST |
| 1 (Function) | Control.Monad.ST.Lazy |
| 2 (Function) | Control.Monad.ST, Control.Monad.ST.Strict |
| unsafeIOToSTM | GHC.Conc |
| unsafeIndex | Data.ByteString.Base |
| unsafeInterleaveIO | System.IO.Unsafe |
| unsafeInterleaveST |
| 1 (Function) | Control.Monad.ST.Lazy |
| 2 (Function) | Control.Monad.ST, Control.Monad.ST.Strict |
| unsafePackAddress | Data.ByteString.Base, Data.ByteString.Char8 |
| unsafePerformIO | Foreign, System.IO.Unsafe |
| unsafeSTToIO | Control.Monad.ST, Control.Monad.ST.Strict |
| unsafeTail | Data.ByteString.Base |
| unsafeTake | Data.ByteString.Base |
| unsafeThaw | Data.Array.IO, Data.Array.MArray, Data.Array.ST, Data.Array.Storable |
| unsafeThawArray# | GHC.Exts, GHC.Prim |
| unsafeUseAsCString | Data.ByteString.Base |
| unsafeUseAsCStringLen | Data.ByteString.Base |
| unsetEnv | System.Posix, System.Posix.Env |
| until | Prelude |
| unusedOffset |
| 1 (Function) | Text.Regex.Posix.ByteString |
| 2 (Function) | Text.Regex.Posix.String |
| unusedRegOffset | Text.Regex.Posix, Text.Regex.Posix.Wrap |
| unwords |
| 1 (Function) | Data.ByteString.Char8 |
| 2 (Function) | Data.ByteString.Lazy.Char8 |
| 3 (Function) | Data.List, Prelude |
| unwordsPS | Data.PackedString |
| unwrapArrow | Control.Applicative |
| unwrapMonad | Control.Applicative |
| unzip |
| 1 (Function) | Data.ByteString |
| 2 (Function) | Data.ByteString.Char8 |
| 3 (Function) | Data.List, Prelude |
| unzip3 | Data.List, Prelude |
| unzip4 | Data.List |
| unzip5 | Data.List |
| unzip6 | Data.List |
| unzip7 | Data.List |
| update |
| 1 (Function) | Data.HashTable |
| 2 (Function) | Data.IntMap |
| 3 (Function) | Data.Map |
| 4 (Function) | Data.Sequence |
| updateAt | Data.Map |
| updateLookupWithKey |
| 1 (Function) | Data.IntMap |
| 2 (Function) | Data.Map |
| updateMax | Data.Map |
| updateMaxWithKey | Data.Map |
| updateMin | Data.Map |
| updateMinWithKey | Data.Map |
| updatePosChar | Text.ParserCombinators.Parsec.Pos |
| updatePosString | Text.ParserCombinators.Parsec.Pos |
| updateState | Text.ParserCombinators.Parsec, Text.ParserCombinators.Parsec.Prim |
| updateWithKey |
| 1 (Function) | Data.IntMap |
| 2 (Function) | Data.Map |
| upper | Text.ParserCombinators.Parsec, Text.ParserCombinators.Parsec.Char |
| urgentDataAvailable | System.Posix.Signals, System.Posix, System.Posix.Signals.Exts |
| usageInfo | System.Console.GetOpt |
| useAsCString | Data.ByteString, Data.ByteString.Char8 |
| useAsCStringLen | Data.ByteString, Data.ByteString.Char8 |
| userDefinedSignal1 | System.Posix.Signals, System.Posix, System.Posix.Signals.Exts |
| userDefinedSignal2 | System.Posix.Signals, System.Posix, System.Posix.Signals.Exts |
| userError | Prelude, System.IO.Error |
| userErrorType | System.IO.Error |
| userErrors | Control.Exception |
| userGecos | System.Posix, System.Posix.User |
| userGroupID | System.Posix, System.Posix.User |
| userID | System.Posix, System.Posix.User |
| userName | System.Posix, System.Posix.User |
| userPassword | System.Posix, System.Posix.User |
| userShell | System.Posix, System.Posix.User |
| userTime | System.Posix, System.Posix.Process |
| usernameCompletionFunction | System.Console.Readline |
| using | Control.Parallel.Strategies |
| usleep | System.Posix, System.Posix.Unistd |
