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Within LTS Haskell 24.61 (ghc-9.10.3)

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Exact lookup

1. lookupWithDefaultUFM :: Uniquable key => UniqFM key elt -> elt -> key -> elt

   ghc	GHC.Types.Unique.FM

   No documentation available.

2. lookupUniqMap :: Uniquable k => UniqMap k a -> k -> Maybe a

   ghc	GHC.Types.Unique.Map

   No documentation available.

3. lookupWithDefaultUniqMap :: Uniquable k => UniqMap k a -> a -> k -> a

   ghc	GHC.Types.Unique.Map

   No documentation available.

4. lookupUSDFM :: Uniquable key => UniqSDFM key ele -> key -> Maybe ele

   ghc	GHC.Types.Unique.SDFM

   lookupSUDFM env x looks up an entry for x, looking through all Indirects until it finds a shared Entry. Examples in terms of the model (see UniqSDFM): >>> lookupUSDFM [({u1,u3}, Just ele1), ({u2}, Just ele2)] u3 == Just ele1 >>> lookupUSDFM [({u1,u3}, Just ele1), ({u2}, Just ele2)] u4 == Nothing >>> lookupUSDFM [({u1,u3}, Just ele1), ({u2}, Nothing)] u2 == Nothing

5. lookupUniqSet :: Uniquable key => UniqSet key -> key -> Maybe key

   ghc	GHC.Types.Unique.Set

   What's the point you might ask? We might have changed an object without it's key changing. In which case this lookup makes sense.

6. lookupUniqSet_Directly :: UniqSet a -> Unique -> Maybe a

   ghc	GHC.Types.Unique.Set

   No documentation available.

7. lookupDVarEnv :: DVarEnv a -> Var -> Maybe a

   ghc	GHC.Types.Var.Env

   No documentation available.

8. lookupInScope :: InScopeSet -> Var -> Maybe Var

   ghc	GHC.Types.Var.Env

   Look up a variable the InScopeSet. This lets you map from the variable's identity (unique) to its full value.

9. lookupInScope_Directly :: InScopeSet -> Unique -> Maybe Var

   ghc	GHC.Types.Var.Env

   No documentation available.

10. lookupRnInScope :: RnEnv2 -> Var -> Var

    ghc	GHC.Types.Var.Env

    No documentation available.

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