~/lightning

Lightning Talk: Inlay Hints and the X-Ray mode

Lightningat Scalar Conference 2025 · 2025-03-27..03-28· [developer-experience]
slides:none on file

IntelliJ Scala plugin shows concrete editor annotations: parameter-name hints for literal arguments, inferred type hints on variables and intermediary results for method chains, range inclusivity markers, implicit-parameter labels and Git code vision. X‑Ray mode lets those annotations stay off by default and appear only while held with double-press Cmd/Ctrl to peek, or be pinned per-project. The features are implemented in the plugin, work in practice to avoid repeated settings toggles, and aim to reduce cognitive load without modifying source code.

AI-written summary · about

  1. 0:00Inlay hints and X-ray mode
  2. 0:45Scala benefits from inlay hints
  3. 2:29Enabling inlay hints in IntelliJ
  4. 4:43Types and inferred values
  5. 6:29Method chains and types
  6. 7:59Code vision and Git
  7. 9:04Challenges with inlay hints
  8. 10:10X-ray mode for inlay hints
  9. 12:00Summary and resources
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