practice: functional libs

[oldratlee]

Functional libs 🌀

• vavr ❤️ , VΛVΓ (Vavr, formerly called Javaslang) is a non-commercial, non-profit object-functional library that runs with Java 8+. It aims to reduce the lines of code and increase code quality.
  • homepage: http://vavr.io/
    • documentation: http://docs.vavr.io/
  • code repo: https://github.com/vavr-io/vavr
  • contains persistent (immutable) collections 📌
  • has simple Kotlin integration 🍩: https://github.com/vavr-io/vavr-kotlin
• cyclops ❤️ , An advanced, but easy to use, platform for writing functional applications in Java 8.
  • homepage: http://cyclops-react.io/
  • code repo: https://github.com/aol/cyclops-react
  • contains persistent (immutable) collections 📌
  • excellent ecosystem integration, see the cyclops integration modules
    • related/similar lib integration: RxJava, Reactor, guava, vavr, functionaljava...
• Functional Java , Functional programming in Java
  • code repo: https://github.com/functionaljava/functionaljava
  • contains persistent (immutable) collections 📌
• procrastination , A small, straightforward library bringing the benefits of functional programming to Java 11
  • code repo: https://github.com/gdejohn/procrastination
  • contains persistent (immutable) collections 📌
• jOOL , The Missing Parts in Java 8 jOOλ improves the JDK libraries in areas where the Expert Group's focus was elsewhere. It adds tuple support, function support, and a lot of additional functionality around sequential Streams.
  • code repo: https://github.com/jOOQ/jOOL
• Speedment , is a Stream ORM Java Toolkit and Runtime
  https://github.com/speedment/speedment
• guava
  • code repo: https://github.com/google/guava
  • it is well known that guava is more than a collection lib
  • contains immutable collections
    • https://github.com/google/guava/wiki/ImmutableCollectionsExplained
    • NOT persistent collections! 😱 not nice!
      • implementation of java collections, has update operations actually and update operations throw UnsupportedOperationException 😱, not nice!

more about collection libs on jvm see #13

Related resources

• Funtional
  • Seemingly impossible functional programs ❤️ - math.andrej.com
  • Reconsidering Functional Programming - prog21.dadgum.com
  • Is FunctionalJava a good and reliable functional library? - reddit.com
  • Faster Purely Functional Data Structures for Java
  • Destroy All Ifs — A Perspective from Functional Programming
  • Functional Libraries for Java 8 and 9 - oredev.org
• persistent (immutable) collections
  • Data Structures in a Nutshell - vavr.io/vavr-docs
    Functional Data Structures = immutable + persistent
  • Immutable/Persistent Data Structures for Functional JS – Anjana Vakil – PartialConf 2017 - Youtube
    Terrific share for Persistent Data Structures!!

PS

• https://github.com/tedyoung/awesome-java8

[oldratlee]

🔥 kotlin-arrow ❤️

• Introduction to Arrow in Kotlin | Baeldung
  Arrow is a library merged from KΛTEGORY and funKTionale.
  https://www.baeldung.com/kotlin-arrow
• https://arrow-kt.io/docs/
  • FP patterns https://arrow-kt.io/docs/patterns/glossary/
  • https://arrow-kt.io/docs/quickstart/projects/
• https://github.com/arrow-kt/arrow
• How Optional Breaks the Monad Laws and Why It Matters — SitePoint
  https://www.sitepoint.com/how-optional-breaks-the-monad-laws-and-why-it-matters/

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• funKTionale , Functional constructs for Kotlin
  • code repo: https://github.com/MarioAriasC/funKTionale
  • pure Kotlin implementation 🍩