GitHub - ezyang/compact: Compact regions library for Haskell

Non-GC'd, contiguous storage for immutable data structures. This package provides user-facing APIs for working with "compact regions", which hold a fully evaluated Haskell object graph. These regions maintain the invariant that no pointers live inside the struct that point outside it, which ensures efficient garbage collection without ever reading the structure contents (effectively, it works as a

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"user-facing APIs for working with "compact regions", which hold a fully evaluated Haskell object graph. These regions maintain the invariant that no pointers live inside the struct that point outside it"