#2986: :info printing instances often isn't wanted ---------------------------------+------------------------------------------ Reporter: Remi | Owner: Remi Type: feature request | Status: new Priority: lowest | Milestone: 7.6.2 Component: GHCi | Version: 6.10.1 Keywords: :info instances | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by simonpj): Yes, I didn't find the instances summary perspicuous either; I suggest * For `:info Maybe`: (a type constructor) {{{ data Maybe a = Nothing | Just a -- Defined in `GHC.Types' -- Use :instances to see the 24 instances of `Maybe' }}} * For `:info Monad`: (a class) {{{ class Monad m where (>>=) :: m a -> (a -> m b) -> m b (>>) :: m a -> m b -> m b return :: a -> m a fail :: String -> m a -- Defined in `GHC.Base' -- Use :instances to see the 8 instances of `Monad' }}} For the `:instances` can you show the module where the instance comes from? Simon -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/2986#comment:24 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler