A New Notation for Arrows

bft <[email protected]> Thu, 31 May 2007 20:07:13 +0100
Newsgroups gmane.comp.lang.haskell.hugs.user
Message-ID <[email protected]>
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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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<pre>On Thu, May 31, 2007 at 02:55:49PM +0100, bft wrote:<br>&gt;<i> Is there any version of Haskell (Hugs or Ghc) which includes the new<br></i>&gt;<i> notation of arrows introduced by Ross Paterson ?  Instead, where can I get
<br></i>&gt;<i> it ? The Control.Arrow.hs file did not include the new notation of<br></i>&gt;<i> arrows.<br></i><br><b>Ross Paterson wrote :</b><br>&gt; It&#39;s supported by GHC 6.2 and later, with the -farrows option<br>
&gt;(see the GHC User&#39;s Guide).  To use arrow notation with Hugs or<br>&gt; any other Haskell implementation, you need the arrows preprocessor<br>&gt;(<a href="http://www.haskell.org/arrows/download.html">http://www.haskell.org/arrows/download.html
</a>).</pre><br><tt><br>Thank you for your prompt answer.</tt><br>
<br>
<tt>I tried to download the&nbsp; x86/Linux Binary Release</tt><br>
<tt>arrowp-0.5-linux-i386.tgz at</tt><br>
<tt><a href="http://www.haskell.org/arrows/download.html">http://www.haskell.org/arrows/download.html</a>&nbsp;; but it failed with this</tt><br>
<tt>message :</tt><br>
<tt>&quot;Not Found</tt><br>
<tt>The requested URL /arrows/arrowp-0.5-linux-i386.tgz was not found on</tt><br>
<tt>this server.&quot;</tt><br>
<br>
<tt>I tried the Unix Source Release: arrowp-0.5-src.tgz, but I failed when</tt><br>
<tt>building it on my Linux Fedora Core 6 system.</tt><br>
<tt>I have a ghc-6.6.1 Haskell compiler and the Hugs98 (march 2005 version)</tt><br>
<tt>Haskell interpreter.</tt><br>
<br>
<tt>Thanks again for your help. </tt><br>
<tt>Bernard Fotsing Talla</tt><br>
<br>
<br>

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