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deque-blog/superpose.hs

Created September 9, 2017 17:13
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superpose.hs
empty :: Shape coord
empty = Shape (const False)
superposeAll :: Foldable f => f (Shape coord) -> Shape coord
superposeAll shapes = Shape $ \coord -> any (`isInShape` coord) shapes
superpose :: Shape coord -> Shape coord -> Shape coord
superpose s1 s2 = superposeAll [s1, s2]
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