#14107: Implement Semigroup and Monoid instances for the ST monad -------------------------------------+------------------------------------- Reporter: plato | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: Core Libraries | Version: 8.2.1 Resolution: | Keywords: newcomer Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * keywords: => newcomer Comment: Replying to [ticket:14107 plato]:
Since IO implements `Semigroup` and `Monoid`, is there a good reason for `ST` not to implement those, too?
The reason is because no one has asked for them yet :) I'd have no issues with a patch that implemented this. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14107#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler