1826c8b3e9
transient/persistent!/conj!/assoc!/dissoc!/disj!/pop! as copy-on-write over the persistent collections (host/chez/transients.ss) — each op rebuilds the persistent coll (no in-place perf) but the semantics match, so into/frequencies/group-by work. Adds persistent disj over pset-disj. get/count/contains? are redefined to see through a transient (frequencies and group-by both do (get tm k) on a transient map); vector? on a transient vector is false, which group-by relies on. Prelude parity 1326 -> 1382/2497, 0 new divergences. emit-test exercises the direct transient ops via run-prelude and the overlay users (frequencies/group-by/into) end-to-end through the bin/jolt-chez -e binary. |
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