| Handle | GHC.IO.Handle, System.IO |
| handle | Control.Exception.Base, Control.Exception |
| handleJust | Control.Exception.Base, Control.Exception |
| HandlePosition | GHC.IO.Handle |
| HandlePosn | |
| 1 (Type/Class) | GHC.IO.Handle, System.IO |
| 2 (Data Constructor) | GHC.IO.Handle |
| Handler | |
| 1 (Type/Class) | Control.Exception |
| 2 (Data Constructor) | Control.Exception |
| HandlerFun | GHC.Conc.Signal, GHC.Conc |
| handleToFd | GHC.IO.Handle.FD |
| HasCallStack | GHC.Stack |
| HasField | GHC.Records |
| hashStableName | GHC.StableName, System.Mem.StableName |
| hashUnique | Data.Unique |
| HasResolution | Data.Fixed |
| hClose | GHC.IO.Handle, System.IO |
| hClose_help | GHC.IO.Handle |
| hDuplicate | GHC.IO.Handle |
| hDuplicateTo | GHC.IO.Handle |
| head | |
| 1 (Function) | GHC.List, GHC.OldList, Data.List, Prelude |
| 2 (Function) | Data.List.NonEmpty |
| heapBase | GHC.RTS.Flags |
| HeapByCCS | GHC.RTS.Flags |
| HeapByClosureType | GHC.RTS.Flags |
| HeapByDescr | GHC.RTS.Flags |
| HeapByLDV | GHC.RTS.Flags |
| HeapByMod | GHC.RTS.Flags |
| HeapByRetainer | GHC.RTS.Flags |
| HeapByType | GHC.RTS.Flags |
| HeapOverflow | Control.Exception.Base, Control.Exception |
| heapProfileInterval | GHC.RTS.Flags |
| heapProfileIntervalTicks | GHC.RTS.Flags |
| heapSizeSuggestion | GHC.RTS.Flags |
| heapSizeSuggestionAuto | GHC.RTS.Flags |
| hFileSize | GHC.IO.Handle, System.IO |
| hFlush | GHC.IO.Handle, System.IO |
| hFlushAll | GHC.IO.Handle |
| hGetBuf | GHC.IO.Handle, System.IO |
| hGetBuffering | GHC.IO.Handle, System.IO |
| hGetBufNonBlocking | GHC.IO.Handle, System.IO |
| hGetBufSome | System.IO |
| hGetChar | GHC.IO.Handle, System.IO |
| hGetContents | GHC.IO.Handle, System.IO |
| hGetEcho | GHC.IO.Handle, System.IO |
| hGetEncoding | GHC.IO.Handle, System.IO |
| hGetLine | GHC.IO.Handle, System.IO |
| hGetPosn | GHC.IO.Handle, System.IO |
| hIsClosed | GHC.IO.Handle, System.IO |
| hIsEOF | GHC.IO.Handle, System.IO |
| hIsOpen | GHC.IO.Handle, System.IO |
| hIsReadable | GHC.IO.Handle, System.IO |
| hIsSeekable | GHC.IO.Handle, System.IO |
| hIsTerminalDevice | GHC.IO.Handle, System.IO |
| hIsWritable | GHC.IO.Handle, System.IO |
| hLock | GHC.IO.Handle.Lock, GHC.IO.Handle |
| hLookAhead | GHC.IO.Handle, System.IO |
| hpc | GHC.RTS.Flags |
| hPrint | System.IO |
| hPrintf | Text.Printf |
| HPrintfType | Text.Printf |
| hPutBuf | GHC.IO.Handle, System.IO |
| hPutBufNonBlocking | GHC.IO.Handle, System.IO |
| hPutChar | GHC.IO.Handle, System.IO |
| hPutStr | GHC.IO.Handle, System.IO |
| hPutStrLn | System.IO |
| hReady | System.IO |
| HRefl | Data.Type.Equality, Type.Reflection, Data.Typeable, Data.Data |
| hSeek | GHC.IO.Handle, System.IO |
| hSetBinaryMode | GHC.IO.Handle, System.IO |
| hSetBuffering | GHC.IO.Handle, System.IO |
| hSetEcho | GHC.IO.Handle, System.IO |
| hSetEncoding | GHC.IO.Handle, System.IO |
| hSetFileSize | GHC.IO.Handle, System.IO |
| hSetNewlineMode | GHC.IO.Handle, System.IO |
| hSetPosn | GHC.IO.Handle, System.IO |
| hShow | GHC.IO.Handle, System.IO |
| hsLex | Text.Read.Lex |
| hTell | GHC.IO.Handle, System.IO |
| hTryLock | GHC.IO.Handle.Lock, GHC.IO.Handle |
| hUnlock | GHC.IO.Handle.Lock |
| hWaitForInput | GHC.IO.Handle, System.IO |