Hoogle Search

Within LTS Haskell 24.6 (ghc-9.10.2)

Note that Stackage only displays results for the latest LTS and Nightly snapshot. Learn more.

Exact lookup

1. lookupGE :: Ord a => a -> Set a -> Maybe a

   containers	Data.Set.Internal

   Find smallest element greater or equal to the given one.

   lookupGE 3 (fromList [3, 5]) == Just 3
   lookupGE 4 (fromList [3, 5]) == Just 5
   lookupGE 6 (fromList [3, 5]) == Nothing
   

2. lookupGT :: Ord a => a -> Set a -> Maybe a

   containers	Data.Set.Internal

   Find smallest element greater than the given one.

   lookupGT 4 (fromList [3, 5]) == Just 5
   lookupGT 5 (fromList [3, 5]) == Nothing
   

3. lookupIndex :: Ord a => a -> Set a -> Maybe Int

   containers	Data.Set.Internal

   Lookup the index of an element, which is its zero-based index in the sorted sequence of elements. The index is a number from 0 up to, but not including, the size of the set.

   isJust   (lookupIndex 2 (fromList [5,3])) == False
   fromJust (lookupIndex 3 (fromList [5,3])) == 0
   fromJust (lookupIndex 5 (fromList [5,3])) == 1
   isJust   (lookupIndex 6 (fromList [5,3])) == False
   

4. lookupLE :: Ord a => a -> Set a -> Maybe a

   containers	Data.Set.Internal

   Find largest element smaller or equal to the given one.

   lookupLE 2 (fromList [3, 5]) == Nothing
   lookupLE 4 (fromList [3, 5]) == Just 3
   lookupLE 5 (fromList [3, 5]) == Just 5
   

5. lookupLT :: Ord a => a -> Set a -> Maybe a

   containers	Data.Set.Internal

   Find largest element smaller than the given one.

   lookupLT 3 (fromList [3, 5]) == Nothing
   lookupLT 5 (fromList [3, 5]) == Just 3
   

6. lookupMax :: Set a -> Maybe a

   containers	Data.Set.Internal

   The maximal element of a set.

7. lookupMin :: Set a -> Maybe a

   containers	Data.Set.Internal

   The minimal element of a set.

8. lookupOption :: IsOption v => OptionSet -> v

   tasty	Test.Tasty.Options

   Query the option value.

9. lookupEnvOs :: OsString -> IO (Maybe OsString)

   directory	System.Directory.Internal

   No documentation available.

10. lookupTypeName :: String -> Q (Maybe Name)

    template-haskell	Language.Haskell.TH

    Look up the given name in the (type namespace of the) current splice's scope. See Language.Haskell.TH.Syntax#namelookup for more details.

Page 37 of many | Previous | Next