#10365: Implement Semigroup as a superclass of Monoid Proposal (Phase 1) -------------------------------------+------------------------------------- Reporter: gidyn | Owner: quchen Type: feature request | Status: patch Priority: high | Milestone: 8.0.1 Component: libraries/base | Version: 7.10.1 Resolution: | Keywords: report-impact Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1284 Wiki Page: | prime:Libraries/Proposals/SemigroupMonoid| -------------------------------------+------------------------------------- Changes (by hvr): * wikipage: => prime:Libraries/Proposals/SemigroupMonoid Old description:
More details in Proposal/SemigroupMonoid
=== Phase 1 (GHC 7.12)
Phase 1 consists in (at the very least) moving `Data.Semigroup` and `Data.List.NonEmpty` into `base` for GHC 7.12 (aka 8.0).
If there's enough time we will also implement a warning as part of the first phase:
Add a warning about definitions of an operator named `(<>)` that indicate it will be coming into Prelude in 7.14. We should warn about missing Semigroup instances at any use site of `(<>)` as they'll break in 7.14.
New description: More details in prime:Libraries/Proposals/SemigroupMonoid === Phase 1 (GHC 7.12) Phase 1 consists in (at the very least) moving `Data.Semigroup` and `Data.List.NonEmpty` into `base` for GHC 7.12 (aka 8.0). If there's enough time we will also implement a warning as part of the first phase:
Add a warning about definitions of an operator named `(<>)` that indicate it will be coming into Prelude in 7.14. We should warn about missing Semigroup instances at any use site of `(<>)` as they'll break in 7.14.
-- Comment: update wiki page link -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10365#comment:41 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler