Javaslang - Functional Java Done Right
summary
States Java 8 lacks many functional primitives and shows concrete fixes: Javaslang supplies persistent immutable collections that reuse structure to save memory, functional interfaces up to arity 8 with checked variants, and richer stream-like APIs (distinctBy, groupBy, cycle, foldLeft/foldRight). It provides Option -> empty or present via Iterable integration, Try for checked exceptions that captures failures instead of throwing, lifting to turn exceptions into Option, currying and memoize to cache pure functions, tuples with map/transform, and pattern matching over values and fields.
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chapters (8)
- 0:00Introduction
- 1:21Limitations of Java 8
- 5:22Functional programming core
- 10:10Introducing Javaslang
- 14:07Lambda and tuple basics
- 22:32Control structures
- 28:43Collections API
- 34:44Pattern matching and wrap-up
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