HList

Heterogeneous lists

Version on this page:0.4.2.0
LTS Haskell 6.35:0.4.2.0
Stackage Nightly 2016-05-25:0.4.2.0
Latest on Hackage:0.5.3.0

See all snapshots HList appears in

MIT licensed by 2004 Oleg Kiselyov (FNMOC, Monterey), Ralf Laemmel (CWI/VU, Amsterdam), Keean Schupke (London)
Maintained by [email protected]
This version can be pinned in stack with:HList-0.4.2.0@sha256:0e7978a9ba9d71379bd921fb2b0d0f2881a02afc9000d08992e6a868850813a1,5997

Module documentation for 0.4.2.0

Used by 2 packages in lts-5.15(full list with versions):
poly-arity, Rlang-QQ

HList provides many operations to create and manipulate heterogenous lists (HLists) whose length and element types are known at compile-time. HLists are used to implement

  • records

  • variants

  • type-indexed products (TIP)

  • type-indexed co-products (TIC)

  • keyword arguments

User code should import Data.HList or Data.HList.CommonMain for a slightly more limited scope