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Within LTS Haskell 24.54 (ghc-9.10.3)

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1. pattern ExecutionStageSummary_Kind_SINGLETONKIND :: ExecutionStageSummary_Kind

   gogol-dataflow	Gogol.Dataflow.Types

   Creates a Singleton view of a collection.

2. pattern TransformSummary_Kind_SINGLETONKIND :: TransformSummary_Kind

   gogol-dataflow	Gogol.Dataflow.Types

   Creates a Singleton view of a collection.

3. fromSingletonIndex :: Index key val -> Maybe val

   haskey-btree	Data.BTree.Primitives.Index

   Test if the index consists of a single value. Returns the element if the index is a singleton. Otherwise fails.

   fromSingletonIndex (singletonIndex val) == Just val
   

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