refactor: extract applyDictWithRepStitch to reduce allocation pressure in decodeDictV1 rep-level path#193
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darthcoder wants to merge 2 commits intoDataHaskell:mainfrom
Open
refactor: extract applyDictWithRepStitch to reduce allocation pressure in decodeDictV1 rep-level path#193darthcoder wants to merge 2 commits intoDataHaskell:mainfrom
darthcoder wants to merge 2 commits intoDataHaskell:mainfrom
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…epStitch - Add missing `Int` parameter (maxDef) to the type signature - Use `map (ds V.!) (VU.toList idxs)` for DInt96 and DText, since UTCTime and Text have no VU.Unbox instance and cannot be produced by VU.map
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this is in regards my gsoc application for summer of haskell. hope this is not a waste of the mentors time. While i wanted to learn sufficient amount of haskell to be productive on my own I had to rely a bit on claude in the clutch. If the AI policy is no ai usage then I am willing to only checkin handwritten code from the next time onwards but since the complete test suite is passing and the fix is what i intended it to be even if i am not proficient enough in the syntax i hope it is accepted. |
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Summary
applyDictWithRepStitchfrom the rep-level branch ofdecodeDictV1, replacing a 27-line inlinedo/caseblock with a single callVU.map (ds V.!)(stays in unboxed vector space) instead ofmap (ds V.!) . VU.toListfor allVU.Unboxtypes (Bool,Int32,Int64,Float,Double), avoiding materialisation of an intermediate listUTCTime(DInt96) andText(DText) have noVU.Unboxinstance and correctly fall back tomap (ds V.!) (VU.toList idxs)Closes / relates to #151.
Test plan
cabal test— all 453 HUnit cases pass, all 23 QuickCheck suites pass (100 tests each)src/DataFrame/IO/Parquet/Dictionary.hs🤖 Generated with Claude Code