[Haskell-cafe] View patterns and warnings about overlapping or non-exhaustive patterns

Neil Mitchell ndmitchell at gmail.com
Wed Mar 11 12:27:21 EDT 2009

Hi Stephan,

> I'm working on a data structure that uses Data.Sequence a lot, so views
> are important and I tried to simplify my code using view patterns.
> The problem is, that I keep getting warnings about both overlapping and
> non-exhaustive pattern matches. A simple test case:


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