Pattern Matching

on YouTube ↗22m

" summary

Overview of concrete Java changes and roadmap: unnamed patterns and pattern variables are already delivered; the current preview adds primitive patterns in instanceof and switch so primitives and references interoperate in patterns; record patterns and sealed types enable composable deconstruction; the compiler performs an exhaustiveness check (avoiding silent defaults by inserting a synthetic default at runtime); future work proposes explicit deconstructors to mirror constructors so classes can opt into safe deconstruction.

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" chapters (10)

1. 0:00Introduction
2. 0:43Speaker background
3. 1:48Pattern matching history
4. 6:04Exhaustiveness benefits
5. 9:44Learning Java tips
6. 13:55Switch and instanceof
7. 15:40Primitive types future
8. 17:50Record patterns
9. 20:39Deconstructable APIs
10. 21:46Closing remarks

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