[Haskell-cafe] Beginners Question: Problem with Data Type Declaration

Johan Tibell johan.tibell at gmail.com
Thu Jun 16 10:03:42 CEST 2011


On Thu, Jun 16, 2011 at 9:53 AM, kaffeepause73 <kaffeepause73 at yahoo.de> wrote:
> I try to create an own data type containing "Vector Double" from the H-Matrix
> package. The code:
> ##
> data PowerSig = PowerSig Int Double Vector Double

You need to put parenthesis around (Vector Double). Otherwise this is
interpreted as a constructor with 4 fields (instead of 3).


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