inRange :: Ord a => a -> a -> Set a -> Set a
inRange min max s = fst $ S.split max gt
where (_, gt) = S.split min s
Is there anything in containers that allows me to get a subset of Data.Set?
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27-06-2023 - |
题
I cannot find any functions that given a min and a max return all the values in that interval for any of the structures in containers. Surely there must be...?
解决方案
其他提示
You can write this really easily with Data.Set.filter
:
import Data.Set (Set)
import qualified Data.Set as S
between :: Ord a => a -> a -> Set a -> Set a
between min_ max_ = S.filter (\x -> min_ <= x && x <= max_)
Then you can use it as
> between 3 7 $ S.fromList [1..10]
fromList [3, 4, 5, 6, 7]
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