#9586: Implement Traversable/Foldable-Burning-Bridges Proposal
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Reporter: hvr | Owner: hvr
Type: task | Status: new
Priority: normal | Milestone: 7.10.1
Component: | Version:
libraries/base | Keywords:
Resolution: | Architecture: Unknown/Multiple
Operating System: | Difficulty: Difficult (2-5
Unknown/Multiple | days)
Type of failure: | Blocked By:
None/Unknown | Related Tickets: #9621
Test Case: |
Blocking: |
Differential Revisions: Phab:D209 |
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Comment (by rwbarton):
Replying to [comment:18 Herbert Valerio Riedel
In [changeset:"b8f583928fa6cb5371a872fc73080d2002dd87d9/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="b8f583928fa6cb5371a872fc73080d2002dd87d9" Export `Monoid(..)`/`Foldable(..)`/`Traversable(..)` from Prelude
This finally exposes also the methods of these 3 classes in the Prelude in order to allow to define basic class instances w/o needing imports.
This almost completes the primary goal of #9586
NOTE: `fold`, `foldl'`, `foldr'`, and `toList` are not exposed yet, as they require upstream fixes for at least `containers` and `bytestring`, and are not required for defining basic instances.
Reviewed By: ekmett, austin
Differential Revision: https://phabricator.haskell.org/D236 }}}
This patch seems to be unrelated to the scope of this ticket. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9586#comment:26 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler