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https://github.com/jabrena/functional-rosetta-stone
A repository to review the main concepts about Functional Programming with Java
https://github.com/jabrena/functional-rosetta-stone
functional-programming java java-stream-api java-streams
Last synced: 17 days ago
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A repository to review the main concepts about Functional Programming with Java
- Host: GitHub
- URL: https://github.com/jabrena/functional-rosetta-stone
- Owner: jabrena
- License: apache-2.0
- Created: 2019-02-18T21:26:40.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2024-07-21T08:39:19.000Z (4 months ago)
- Last Synced: 2024-10-11T03:14:45.051Z (about 1 month ago)
- Topics: functional-programming, java, java-stream-api, java-streams
- Language: HTML
- Homepage: https://jabrena.github.io/functional-rosetta-stone/
- Size: 23.9 MB
- Stars: 9
- Watchers: 3
- Forks: 3
- Open Issues: 4
-
Metadata Files:
- Readme: README.md
- Roadmap: docs/roadmap.pdf
Awesome Lists containing this project
README
# Functional Rosetta Stone
[](https://github.com/jabrena/functional-rosetta-stone/actions/workflows/maven.yml)
## Goal
A repository to review the main concepts about Functional Programming with Java.
## How to build the project in local?
```bash
sdk env install
./mvnw clean test -DexcludedGroups=performance,endtoend
./mvnw clean test -DexcludedGroups=performance,endtoend -pl training
./mvnw clean test -DexcludedGroups=performance,endtoend -Dtest=EitherTest -pl training
./mvnw clean compile exec:java -Dexec.mainClass="info.jab.fp.concepts.FunctionalCompositionExamples" -Dexec.args="--enable-preview" -pl training
./mvnw clean test -Dgroups=performance
./mvnw clean test -Dgroups=endtoend
./mvnw versions:display-property-updates
./mvnw versions:display-dependency-updates
./mvnw versions:display-plugin-updates
./mvnw dependency:tree -pl problems
```
## Functional programming features in Java
- [x] [Lambda Expressions](https://openjdk.org/jeps/126) (Functional interfaces, Functions, Supplier, Consumer & Predicates)
- [x] [Optional](https://openjdk.org/jeps/401)
- [x] [Stream API](https://openjdk.org/jeps/107) & [Gatherers](https://openjdk.org/jeps/461)
- [x] [CompletableFuture](https://openjdk.org/jeps/266) & [Structural Concurrency](https://openjdk.org/jeps/453)
- [x] [Immutable Lists](https://openjdk.org/jeps/269)
- [x] [Sealed Classes](https://openjdk.org/jeps/409)
- [x] [Pattern Matching for Switch](https://openjdk.org/jeps/441)
- [x] [Records](https://openjdk.org/jeps/395) & [Record Patterns](https://openjdk.org/jeps/440)
## Functional programming features
- [x] Equational Reasoning
- [ ] Pure/Impure functions
- [ ] Referential Transparency
- [ ] Immutability
- [x] Functional composition
- [x] Eager vs Lazy
## How to run the presentation in local?
```bash
jwebserver -p 9000 -d "$(pwd)/docs/"
```
## Performance
Using the [jmh-results.json](https://github.com/jabrena/functional-rosetta-stone/blob/master/docs/jmh-results.json)
you can review the performance results:
- [https://jmh.morethan.io/](http://jmh.morethan.io/?source=https://raw.githubusercontent.com/jabrena/functional-rosetta-stone/master/docs/jmh-results.json)
- https://nilskp.github.io/jmh-charts/
- https://github.com/akarnokd/jmh-compare-gui
## References
- https://github.com/jabrena/latency-problems
- https://github.com/forax/loom-fiber
- https://cr.openjdk.org/~vklang/Gatherers.html
- https://github.com/forax/we_are_all_to_gather
- https://www.infoq.com/articles/data-oriented-programming-java/
- https://inside.java/2024/05/23/dop-v1-1-introduction/
- https://inside.java/2024/05/27/dop-v1-1-immutable-transparent-data/
- https://inside.java/2024/05/29/dop-v1-1-model-data/