nhc98 libraries

Standard Libraries

nhc98 supports all the standard libraries from the official Haskell '98 Library Report. Here is a summary of the status of each.

library name	complete?	notes
Array	yes	implementation based on vectors
CPUTime	yes	.
Char	yes	.
Complex	yes	.
Directory	yes	.
IO	no	missing: hReady, hWaitForInput, hLookAhead, hIsOpen, hIsClosed, hIsReadable, hIsWritable, hIsSeekable
Ix	yes	.
List	yes	additional fns: deleteFirsts, elemBy, elemIndexBy, lookupBy, notElemBy, permutations, subsequences, sums, products
Locale	yes	.
Maybe	yes	.
Monad	yes	additional fn: untilM
Numeric	yes	additional fn: showIntBase
Prelude	yes	.
Random	yes	identical to Hugs implementation
Ratio	yes	.
System	yes	.
Time	yes	.

Extension libraries

Many of the standard hierarchical libraries are provided in nhc98. To use these, you must add the compile-time option -package pkg, where pkg is the name of the package. See here for ghc's documentation of many of these.

Packages supplied with nhc98-1.20 are: base, Cabal, directory, filepath, fps, haskell-src, HaXml, html, HUnit, old-locale, old-time, parsec, polyparse, pretty, process, QuickCheck, random, xhtml

The following non-standard libraries are provided only in nhc98, not in any other compiler. They are available without any special compiler options.

library name	description
NHC.BinArray	imperative binary arrays
NHC.Binary	binary I/O and binary representations of values
NHC.Bit	bit-twiddling operations, e.g. and, or, xor
NHC.FFI	foreign function interface
NHC.GreenCard	just the standard %dis definitions and constructors you need in order to write your own GreenCard files
NHC.IOExtras	contains IORefs, IOArrays, unsafePerformIO, etc.
NonStdTrace	the common side-effecting trace function
NHC.PackedString	a space-efficient representation of strings
NHC.Vector	primitives underlying IO (mutable) arrays

The latest updates to these pages are available on the WWW from http://www.haskell.org/nhc98/

This page last updated: 17th December 2003
York Functional Programming Group