add Map.differenceSet
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feature-request
Map
- Dominant language
- Haskell
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Description
In `Map.difference` the element type of the second `Map` does not matter and can be chosen arbitrarily. In a current application of mine I have simply a `Set` as second operand. How about adding this function:
```
differenceSet :: Ord k => Map k a -> Set k -> Map k a
```
?
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