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July 2007

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A New Notation for Arrows
by bft 21 Sep '07

21 Sep '07

On Thu, May 31, 2007 at 02:55:49PM +0100, bft wrote: >* Is there any version of Haskell (Hugs or Ghc) which includes the new *>* notation of arrows introduced by Ross Paterson ? Instead, where can I get *>* it ? The Control.Arrow.hs file did not include the new notation of *>* arrows. * *Ross Paterson wrote :* > It's supported by GHC 6.2 and later, with the -farrows option >(see the GHC User's Guide). To use arrow notation with Hugs or > any other Haskell implementation, you need the arrows preprocessor >(http://www.haskell.org/arrows/download.html) Thank you for your prompt answer. I tried to download the x86/Linux Binary Release arrowp-0.5-linux-i386.tgz at http://www.haskell.org/arrows/download.html ; but it failed with this message : "Not Found The requested URL /arrows/arrowp-0.5-linux-i386.tgz was not found on this server." I tried the Unix Source Release: arrowp-0.5-src.tgz, but I failed when building it on my Linux Fedora Core 6 system. I have a ghc-6.6.1 Haskell compiler and the Hugs98 (march 2005 version) Haskell interpreter. Thanks again for your help. Bernard Fotsing Talla

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