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Haskell library for strongly typed heterogeneous collections

A heterogeneous collection is a datatype that is capable of storing data of different types, while providing operations for look-up, update, iteration, and others. There are various kinds of heterogeneous collections, differing in representation, invariants, and access operations.

HList is a Haskell library providing strongly typed heterogeneous collections including extensible records.

Package version:2.0+darcs20070929-1+b2


(C) 2004--2005, Oleg Kiselyov, Ralf Laemmel, Keean Schupke

The HList library and samples

This distribution covers all esential issues discussed in the HList paper.
Additional examples and HList operations are provided.
The code from the database section of the HList paper is not included
since doing so would have implied inclusion of substantial packages,
namely the underlying infrastructure for


haskell-hlist (2.0+darcs20070929-1+b2) unstable; urgency=low

  * Binary-only non-maintainer upload for i386; no source changes.
  * Rebuild against ghc6 (>= 6.8.2dfsg1-1)

 -- Debian/i386 Build Daemon <buildd_i386-ninsei>  Sat, 17 Jan 2009 16:07:20 -0800

haskell-hlist (2.0+darcs20070929-1) unstable; urgency=low

  * New upstream release
  * Built for ghc 6.8.2. (Closes: #445759)
  * Use cdbs and


19 September 2007
	Added HMemberM
	Optimized record projection in Record.hs. The optimization
	should be especially noticeable for record narrowing.
	Added NarrowM, which reports both success and failure of narrowing
	Added equivR, record equivalence modulo field order, with
	witnessing conversions
	ConsUnion.hs now checks for record types and treat the latter
	equivalent modulo the order of field


This package was debianised by Kari Pahula <> on Thu,
08 Mar 2007. All of the Debian 

Browse inside libghc6-hlist-dev_2.0+darcs20070929-1+b2_i386.deb

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