Oops [Fwd: Re: Allowing duplicate instances in GHC 6.4]

[Robert van Herk]

Sorry, this is the compiler error I get:

 No instances for (KeyHasValue MyKeyVal k' v',
                      Datasource.Tools.FakePrelude.TypeEq Float k' z,
                      Datasource' z [MyKeyVal] [MyKeyVal] Float Int)
When I am trying to do

  do { createJoinedDS' x x;
          (joined,(v::Maybe Int)) <- _dsread joined (2.0::Float);
       }

Robert
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From: Robert van Herk <rherk at cs.uu.nl>
Subject: Re: Allowing duplicate instances in GHC 6.4
Date: Thu, 31 Mar 2005 16:49:07 +0200
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Url: http://www.haskell.org//pipermail/glasgow-haskell-users/attachments/20050331/96f83c23/AllowingduplicateinstancesinGHC6-0001.eml