#12001: RFC: Add pattern synonyms to base -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: libraries/base | Version: 7.10.3 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): {{{#!hs pattern II :: Int -> Int# pattern II i <- (I# -> i) where II (I# i) = i pattern FF :: Float -> Float# pattern FF f <- (F# -> f) where FF (F# f) = f }}} also if GHC allowed unlifted types in pattern synonyms, should that be a ticket? {{{ tImB.hs:6:22-25: error: … • Expecting a lifted type, but ‘Int#’ is unlifted • In the type ‘Int#’ tImB.hs:10:22-27: error: … • Expecting a lifted type, but ‘Float#’ is unlifted • In the type ‘Float#’ Compilation failed. }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12001#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler