On Jan 13, 2005, at 7:38 AM, Ross Paterson wrote:
On Thu, Jan 13, 2005 at 02:37:39AM -0800, Simon Marlow wrote:
simonmar 2005/01/13 02:37:39 PST
Modified files: libraries/base package.conf.in libraries/base/Data FiniteMap.hs Set.hs Added files: libraries/base/Data IntMap.hs IntSet.hs Map.hs Log: Add Data.Map, Data.Set, Data.IntMap and Data.IntSet from Daan Leijen's DData library, with some modifications by JP Bernardy and others on the libraries@haskell.org list. Minor changes by me to remove the last references to DData, and add a DEPRECATED copy of the old Data.Set interface to the new Data.Set.
Int{Map,Set} use the type Word, but I think it was decided a while ago that this type shouldn't be standard. Should that be reconsidered?
Please. I've had untold frustration in the past trying to impedence-match different implementations of fixed-width unsigned binary arithmetic.
Also, these modules import Data.Monoid, which contains the non-H98 instance Monoid (a -> a), making it (and these) non-portable. One way out would be to replace that instance in Data.Monoid with one for
data Endo a = Endo { runEndo :: a -> a }
This is a huge frustration for the library writer: define the instance, and give up portability, or leave it out, and eliminate some obvious functionality? -Jan-Willem Maessen
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