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Invert the test.

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Rob Rix 2015-12-11 17:36:19 -05:00
parent 56fcf84f22
commit 253f21d885
1 changed files with 1 additions and 1 deletions
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src/OrderedMap.hs
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@ -37,7 +37,7 @@ empty :: OrderedMap key value
empty = OrderedMap []
union :: Eq key => OrderedMap key value -> OrderedMap key value -> OrderedMap key value
union (OrderedMap a) (OrderedMap b) = OrderedMap $ a ++ filter ((`elem` extant) . fst) b
union (OrderedMap a) (OrderedMap b) = OrderedMap $ a ++ filter (not . (`elem` extant) . fst) b
where extant = fst <$> a
unions :: Eq key => [OrderedMap key value] -> OrderedMap key value