Use `Data.Map.foldr` instead of `Data.Map.fold`

lambdageek / unbound-generics

Specify variable binding in syntax trees using GHC.Generics (reimplementation of Unbound)

https://hackage.haskell.org/package/unbound-generics/

BSD 3-Clause "New" or "Revised" License

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Use `Data.Map.foldr` instead of `Data.Map.fold` #25

Closed christiaanb closed 6 years ago

christiaanb commented 6 years ago

Given that fold = foldr in containers-0.5, there shouldn't be any performance differences. This change is needed to build on GHC 8.6 which ships with containers-0.6.