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darcs patch: Adding Arbitrary instance for Either
by roconnor＠theorem.ca 30 Oct '06

30 Oct '06

Sun Oct 29 23:28:55 CET 2006 roconnor(a)theorem.ca * Adding Arbitrary instance for Either

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haxr representation of Booleans
by Johannes Waldmann 27 Oct '06

27 Oct '06

In haxr-20060626, is the representation of booleans correct? I read here http://www.xmlrpc.com/spec that True is <boolean>1</boolean> This is what e.g. the Python xml rpc library does. But haxr seems to generate <bool>true</bool> which would be false on both accounts (name and value). The obvious patch would be to Network/XmlRpc/Internals.hs : instance Show Type, instance Read Type, and showBool? ( readBool seems OK ) ( are there any non-obvious other places? ) Best regards, -- -- Johannes Waldmann -- Tel/Fax (0341) 3076 6479/80 -- ---- http://www.imn.htwk-leipzig.de/~waldmann/ -------

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darcs patch: add withFile and withBinaryFile (#966)
by Ross Paterson 26 Oct '06

26 Oct '06

Thu Oct 26 01:10:44 BST 2006 Ross Paterson <ross(a)soi.city.ac.uk> * add withFile and withBinaryFile (#966) To be discussed on the libraries list until Thursday 9th November 2006. These functions are fairly small, but they're worth naming because they wrap up a pattern that should be encouraged.

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darcs patch: Add equating p x y = p x == p y
by Duncan Coutts 24 Oct '06

24 Oct '06

Wed Oct 11 15:14:32 BST 2006 Duncan Coutts <duncan.coutts(a)worc.ox.ac.uk> * Add equating p x y = p x == p y Just as useful as the 'comparing' function from Data.Ord, but for cases where we check equality rather than ordering. Use like: groupBy (equating fst)

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darcs patch: Improve Control.Monad.filterM:
by Spencer Janssen 24 Oct '06

24 Oct '06

Fri Aug 4 13:49:57 CDT 2006 Spencer Janssen <sjanssen(a)cse.unl.edu> * Improve Control.Monad.filterM: * filterM is defined in terms of foldr, making it a good consumer in GHC's fusion framework * filterM uses linear stack space with respect to the number of items that the predicate returns true, rather than the total number of elements in the input.

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Where is Distribution.Compat.FilePath in Cabal-1.1.6?
by Bayley, Alistair 24 Oct '06

24 Oct '06

It appears that in Cabal-1.1.6, Distribution.Compat.FilePath is hidden (I don't have it installed, just a complaint from a user trying to install Takusen with ghc-6.6). I had a look around and found this message: http://www.haskell.org/pipermail/cabal-devel/2006-September/000165.html which says to me that it ought to be exposed. What's happened here? Has it moved somewhere else, or is it unintentionally hidden? FWIW, I'm using just the splitFileName and joinPaths functions, so if there are equivalents somewhere else that I ought to be using, I'd love to know. Alistair ***************************************************************** Confidentiality Note: The information contained in this message, and any attachments, may contain confidential and/or privileged material. It is intended solely for the person(s) or entity to which it is addressed. Any review, retransmission, dissemination, or taking of any action in reliance upon this information by persons or entities other than the intended recipient(s) is prohibited. If you received this in error, please contact the sender and delete the material from any computer. *****************************************************************

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TArray.hs
by Taral 24 Oct '06

24 Oct '06

I see TArray is in the libraries, but I note that I posted a version that uses newTVarIO for efficiency a while back. I have attached it, and you are welcome to include it in the GHC distribution. -- Taral <taralx(a)gmail.com> "You can't prove anything." -- Gödel's Incompetence Theorem

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proposed addition to System.IO
by Ross Paterson 23 Oct '06

23 Oct '06

I propose adding the following functions to System.IO: -- | @'withFile' name mode act@ opens a file using 'openFile' and passes -- the resulting handle to the computation @act@. The handle will be -- closed on exit from 'withFile', whether by normal termination or by -- raising an exception. withFile :: FilePath -> IOMode -> (Handle -> IO r) -> IO r withFile name mode = bracket (openFile name mode) hClose -- | @'withBinaryFile' name mode act@ opens a file using 'openBinaryFile' -- and passes the resulting handle to the computation @act@. The handle -- will be closed on exit from 'withBinaryFile', whether by normal -- termination or by raising an exception. withBinaryFile :: FilePath -> IOMode -> (Handle -> IO r) -> IO r withBinaryFile name mode = bracket (openBinaryFile name mode) hClose (bracket is the one from Control.Exception, if available, else the one from System.IO.Error) These functions are close to the Fairbairn Threshold, but just above it, I think, and worth naming because they wrap up a pattern that should be encouraged.

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darcs patch: Documentation for Data.Monoid.Endo (untested because m...
by Samuel Bronson 23 Oct '06

23 Oct '06

Mon Oct 23 14:30:08 EDT 2006 Samuel Bronson <naesten(a)gmail.com> * Documentation for Data.Monoid.Endo (untested because my haddock doesn't like the --source-module flag)

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darcs patch: Add UTF8 converting and outputing functions
by mukai＠jmuk.org 22 Oct '06

22 Oct '06

Thu Oct 12 22:55:03 JST 2006 mukai(a)jmuk.org * Add UTF8 converting and outputing functions In GHC 6.6, the source code can include UTF-8 characters and converted them to Unicode chars. However, there are no (easy) way to convert them from/to UTF-8 in standard libraries of GHC. When outputing unicode characters in current GHC, hPutChar overflows their codepoints, and just prints lower 8-bit. This has not been a serious problem because past haskell programs contained few unicode characters. By now, the codes containing unicode characters become widespread because of supporting UTF-8 encoding. Therefore, base library must have some ways to deal with this problem, IMHO. Best regards, Jun Mukai mukai(a)jmuk.org

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