Add persistent (duplicable) variants of GhostSubmap/GhostSubset #2019
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bsdinis
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tjhance
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Dec 1, 2025
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Context
Currently,
GhostMapAuth(resp.GhostSetAuth) only give out exclusive access to a submap. It is generally useful to have non-exclusive access to some subset of keys, by persisting the submap (i.e., after it's persisted, it can never be removed/updated). This allows for a duplicable resource asserting knowledge of a subset of values in the Map (resp. Set).Implementation;
This PR is broken into three commits:
GhostPersistentSubmapandGhostPersistentPointsTotovstd/tokens/map.rs.GhostPersistentSubsetandGhostPersistentSingletontovstd/tokens/set.rs.I'm happy to break this PR in two (map vs. set) if it sounds useful.
By submitting this pull request, I confirm that my contribution is made under the terms of the MIT license.