#15521: Provide a strict version of sum -------------------------------------+------------------------------------- Reporter: dnadales | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: 8.6.1 Component: Prelude | Version: 8.4.3 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 sjakobi): Adding a strict `sum'` function would fit well with the planned addition of `foldMap'` to `Foldable`: Phab:D4924 I don't think it's necessary to add `sum'` as `Foldable` method though: Just adding it as function to `Data.Foldable` should be good enough. An alternative implementation would be {{{ sum' = getSum #. foldMap' Sum }}} but I don't currently see any advantages to this version. Furthermore, if we add `sum'`, we should also add `product'` for consistency. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15521#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler