~/talk

Incrementalizing Haskell implementation of Putback-based Bidirectional Transformation(…)

Talkat PEPM 2026 · 2026-01-11..01-17· [software-architecture]
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Claims an update-based BiGUL (BigDelta) implemented in Haskell that replaces state-by-state propagation with edit operations adapted from X and Edit Lenses, uses a Bar generic type for mixed-state typing, and provides insert/delete/modify actions as edits. Benchmarks on a family→person model show insert/delete runtimes stay constant as source size grows and are substantially faster than state-based; modify still costs depend on source due to skip needing source access. Semantic equivalence and well-behavedness proofs for core primitives are reported; Bar risks runtime type errors.

AI-written summary · about

  1. 0:00Bidirectional transformations intro
  2. 2:30Putback-based BX and updates
  3. 3:37BIG language in Haskell
  4. 6:12BIG implementation in Haskell
  5. 8:02Incrementalizing BIG with updates
  6. 9:28BIG performance evaluation
  7. 10:58Conclusion and future work
  8. 11:23Q&A on semantics
  9. 13:49Q&A on incrementalization
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