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Within LTS Haskell 24.4 (ghc-9.10.2)

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  1. lookup :: Int -> IntPSQ p v -> Maybe (p, v)

    psqueues Data.IntPSQ

    O(min(n,W)) The priority and value of a given key, or Nothing if the key is not bound.

  2. lookup :: Ord k => k -> OrdPSQ k p v -> Maybe (p, v)

    psqueues Data.OrdPSQ

    O(log n) The priority and value of a given key, or Nothing if the key is not bound.

  3. lookup :: FastMutableIntMap a -> Int -> IO (Maybe a)

    reflex Data.FastMutableIntMap

    Attempt to lookup an element by key in a FastMutableIntMap

  4. lookup :: Eq a => a -> [(a, b)] -> Maybe b

    basic-prelude BasicPrelude

    lookup key assocs looks up a key in an association list. For the result to be Nothing, the list must be finite.

    Examples

    >>> lookup 2 []
Nothing

    >>> lookup 2 [(1, "first")]
Nothing

    >>> lookup 2 [(1, "first"), (2, "second"), (3, "third")]
Just "second"

  5. lookup :: Location -> BorderMap a -> Maybe a

    brick Brick.BorderMap

    Look up a single position.

  6. lookup :: Int -> IMap a -> Maybe a

    brick Data.IMap

    No documentation available.

  7. lookup :: forall (m :: Type -> Type) a . Monad m => Focus a m (Maybe a)

    focus Focus

    Reproduces the behaviour of Data.Map.lookup.

  8. lookup :: Key -> Word64Map a -> Maybe a

    ghc-lib-parser GHC.Data.Word64Map.Internal

    Lookup the value at a key in the map. See also lookup.

  9. lookup :: Key -> Word64Map a -> Maybe a

    ghc-lib-parser GHC.Data.Word64Map.Lazy

    Lookup the value at a key in the map. See also lookup.

  10. lookup :: Key -> Word64Map a -> Maybe a

    ghc-lib-parser GHC.Data.Word64Map.Strict

    Lookup the value at a key in the map. See also lookup.

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