On 15 October 2011 23:17, Ertugrul Soeylemez <e...@ertes.de> wrote: > Both instances are valid here, and there is no mechanism to choose one of > them.
There is: OverlappingInstances[1] chooses the most specific instance. So in case someVector :: Vector Word8 the instance Show (Vector Word8) is chosen because it's the most specific. Bas [1] http://www.haskell.org/ghc/docs/latest/html/users_guide/type-class-extensions.html#instance-overlap _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe