#13026: RFC functions for sums and products -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: libraries/base | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Iceland_jack): Purescript also includes this function for `Data.Functor.Compose` {{{#!hs bihoistCompose :: forall f g h i . Functor f => (f ~> h) -> (g ~> i) -> Compose f g ~> Compose h i bihoistCompose natF natG (Compose fga) = Compose (natF (map natG fga)) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13026#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler