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  1. lookup :: Ord k => k -> PSQ k p -> Maybe p

    PSQueue Data.PSQueue

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

  2. lookup :: Ord k => k -> PSQ k p -> Maybe p

    PSQueue Data.PSQueue.Internal

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

  3. lookup :: Key -> KeyMap v -> Maybe v

    aeson-schemas Data.Aeson.Schema.Utils.Compat

    Return the value to which the specified key is mapped, or Nothing if this map contains no mapping for the key.

  4. lookup :: BCP47 -> Trie a -> Maybe a

    bcp47 Data.BCP47.Trie

    Lookup the most relevant item for a tag "Lookup is used to select the single language tag that best matches the language priority list for a given request...For example, if the language range is 'de-ch', a lookup operation can produce content with the tags de or 'de-CH' but never content with the tag 'de-CH-1996'." https://tools.ietf.org/html/bcp47#page-2-12

  5. lookup :: Bytes -> Map v -> Maybe v

    bytehash Data.Bytes.HashMap

    Returns the value associated with the key in the map.

  6. lookup :: Bytes -> Map -> Maybe Word

    bytehash Data.Bytes.HashMap.Word

    No documentation available.

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

    cabal-install-solver Distribution.Solver.Compat.Prelude

    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"

  8. lookup :: Var QPN -> ConflictSet -> Maybe (Set Conflict)

    cabal-install-solver Distribution.Solver.Modular.ConflictSet

    No documentation available.

  9. lookup :: Eq k => k -> PSQ k v -> Maybe v

    cabal-install-solver Distribution.Solver.Modular.PSQ

    No documentation available.

  10. lookup :: Eq k => k -> WeightedPSQ w k v -> Maybe v

    cabal-install-solver Distribution.Solver.Modular.WeightedPSQ

    O(N). Return the value associated with the first occurrence of the give key, if it exists.

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