#9586: Implement Traversable/Foldable-Burning-Bridges Proposal -------------------------------------+------------------------------------- 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 | -------------------------------------+------------------------------------- Changes (by hvr): * related: => #9621 Comment: Replying to [comment:5 dfeuer]:
rwbarton points out that there are optimized versions of these for various things, and that most containers use `size` instead of `length`. Therefore, I would propose instead adding `size` and `null` to the `Foldable` class, with default definitions as above.
Extending `Foldable` has become a ticket of its own at #9621 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9586#comment:15 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler