[Haskell-cafe] how to avoid overlapping instance error?

Simon Peyton-Jones simonpj at microsoft.com
Mon Feb 28 18:50:20 EST 2005

| Or I suppose, one could rephrase this question as why not
| simplify instance declarations to be:
|    instance ToSet where
|       toSet = Set.fromList
| And let the typechecker take care of figuring out what instance is
| being specified here?

That might be possible, but Haskell forces you to be a bit more
explicit, that's all.


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