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

Robert van Herk rherk at cs.uu.nl
Thu Mar 31 10:11:19 EST 2005

Sorry, oops again:

The problem is that it complains that it cannot find an instance for
  Datasource' z [MyKeyVal] [MyKeyVal] Float Int

Whilst I have an instance
  Datasource [MyKeyVal] Float Int

Thus, it seems that it needs an explicit type for the z here.

Both datasources stored in the joined datasource are of type [MyKeyVal], 
so I would expect this to compile correctly, and then take the left 

Sorry that my explanation is all so confusing....

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