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Implement Italian Fiscal Code in Kotlin #6
Description
Implement the Italian Fiscal Code algorithm in Kotlin and get it verified by the shared test suite.
What to build
A program that reads one JSON object on stdin and writes the fiscal code (or an error) as JSON on stdout, exactly as described in SPECIFICATION.md.
$ echo '{"surname":"ROSSI","name":"MARIO","birth_date":"1980-01-01","sex":"M","birthplace_code":"H501"}' | ./elc run kotlin
{"fiscal_code": "RSSMRA80A01H501U"}Suggested setup
| Directory | languages/kotlin/ |
| Family | jvm |
| Docker base | eclipse-temurin:21-jdk + kotlinc (just a suggestion) |
Checklist
-
languages/kotlin/with source,Dockerfile,run.sh,manifest.yamlandREADME.md - The algorithm is written entirely in Kotlin (no wrappers, no fiscal-code libraries, no remote calls)
-
./elc test kotlinpasses 87/87 - PR opened with
Closes #<this issue>
See CONTRIBUTING.md and the Python / PHP implementations for complete examples.
🎃 This issue is part of Hacktoberfest. Comment below to claim it!
Activity
Rahul-pamula commentedon Oct 14, 2026
Hi! I'd love to work on this issue. I'm @Rahul-pamula and I'm interested in contributing here. Could I be assigned this one? I'll get started right away! 🚀
francescobianco commentedon Oct 15, 2026
Hi @Rahul-pamula, thank you so much for jumping in! 🙌 The issue is all yours, I've just assigned it to you.
A few pointers to get going:
Dockerfile,run.sh,manifest.yaml,README.md)../elc test kotlinlocally until you see 87/87, then open the PR withCloses #6.If you get stuck on anything, just ask here, we're happy to help.
And please feel free to go further than this one issue! 🌍 Every language not yet on the board is a welcome contribution: you can pick another
hacktoberfestissue, propose a language you love, improve the docs or the tooling, or share the project with friends who might enjoy the challenge. The more people and languages, the better.🏅 One more thing: once your first PR is submitted, if you'd like, you can request to be added to the list of official Openapi contributors at openapi/contributors.
Happy Hacktoberfest and welcome aboard! 🎃
Rahul-pamula commentedon Oct 15, 2026
Hi @francescobianco, I've finished the Kotlin implementation and opened PR #22 with
Closes #6.Thank you for assigning this to me! 🙌
francescobianco commentedon Oct 16, 2026
Thank you so much @Rahul-pamula, great work! 🙌 A native Kotlin implementation with its own JSON parser, zero dependencies and 87/87 vectors is exactly the spirit of this project. We'll review #22 shortly.
🏅 Now that your first PR is in, you're very welcome to become an official Openapi® contributor: fork openapi/contributors, add your row (main project:
openapi/every-language-fiscal-code), and open a PR. Once it's merged you'll be listed in the registry and can show the Openapi® Contributor badge on your profile README:🐧 And if you're curious, take a look at our latest project, gknowledge: Karpathy's LLM Wiki as a native GNOME app. Drop in your documents and get a linked Markdown wiki that an LLM keeps up to date, offline by default, with an MCP server for Claude Code, Codex or Cursor. It's in Python, and there are
good first issues if you'd like to contribute there too. A ⭐ is always appreciated!Thanks again and happy Hacktoberfest! 🎃