Functional Programming in Java, Groovy, and Kotlin
summary
Code-heavy comparison of Java, Groovy, and Kotlin showing actual code, a GitHub repo, and runtime details: examples of lambdas, method references, streams, closure composition, memoize and tail-recursion AST transforms, Kotlin sequences and Arrow library, and Groovy meta-programming and traits. Demonstrates a working cat photo downloader GUI using Flickr, tests run under Java 11 with 200 tests (2 ignored), and notes about Java 17 / Gradle compatibility and which language features are truly practical.
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chapters (22)
- 0:00Intro
- 0:47Contact Information
- 2:01New Book
- 2:16Certifications
- 2:37Alternative Languages
- 3:10Functional Features
- 4:17Summary
- 5:02Groovy
- 6:22Kotlin
- 7:44Java
- 8:33lambdas
- 9:03closures
- 9:58lambda expressions
- 11:22prime number checker
- 14:56method names
- 15:38Kotlin functions
- 19:06Lazy streams
- 22:22Lazy sequences
- 23:24Map filter reduce
- 25:36Composition
- 31:42Kotlin Arrow
- 34:18Meta Programming
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