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| author | Herbert Valerio Riedel <hvr@gnu.org> | 2014-09-15 08:37:30 +0200 |
|---|---|---|
| committer | Herbert Valerio Riedel <hvr@gnu.org> | 2014-09-15 08:37:39 +0200 |
| commit | c0fa383d9109800a4e46a81b418f1794030ba1bd (patch) | |
| tree | 19dc80e4d266eb6fd7b56b6f61d4f7ed4f10a097 /libraries/base/Prelude.hs | |
| parent | 004c5f4fec78414943d788c2a8b42a4500272949 (diff) | |
| download | haskell-c0fa383d9109800a4e46a81b418f1794030ba1bd.tar.gz | |
Export `Traversable()` and `Foldable()` from Prelude
This exposes *only* the type-classes w/o any of their methods.
This is the very first step for implementing BPP (see #9586), which
already requires breaking up several import-cycles leading back to `Prelude`.
Ideally, importing `Prelude` should be avoided in most `base` modules,
as `Prelude` does not define any entities, but rather re-exports
existing ones.
Test Plan: validate passes
Reviewers: ekmett, austin
Reviewed By: ekmett, austin
Subscribers: simonmar, ezyang, carter
Differential Revision: https://phabricator.haskell.org/D209
GHC Trac Issues: #9586
Diffstat (limited to 'libraries/base/Prelude.hs')
| -rw-r--r-- | libraries/base/Prelude.hs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libraries/base/Prelude.hs b/libraries/base/Prelude.hs index f58cd17cd2..53414c95dc 100644 --- a/libraries/base/Prelude.hs +++ b/libraries/base/Prelude.hs @@ -72,6 +72,9 @@ module Prelude ( Monad((>>=), (>>), return, fail), mapM, mapM_, sequence, sequence_, (=<<), + -- ** Traversals and Foldables + Foldable, Traversable, + -- ** Miscellaneous functions id, const, (.), flip, ($), until, asTypeOf, error, undefined, @@ -140,7 +143,9 @@ import System.IO import System.IO.Error import Data.List import Data.Either +import Data.Foldable ( Foldable ) import Data.Maybe +import Data.Traversable ( Traversable ) import Data.Tuple import GHC.Base |