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PLDB: A Programming Language Database

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PLDB is a public domain ScrollSet and website, compiling over 135,000 facts about 4,000+ programming languages. This repository hosts the entire ScrollSet, codebase, and website for https://pldb.io.

📂 Downloading the Data

The PLDB data is available in popular formats, with full documentation:

• CSV: pldb.csv
• TSV: pldb.tsv
• JSON: pldb.json

📜 Contributing

Adding a New Language

Local Method

1. Clone the repository.
2. Create a new .scroll file in concepts/ (e.g., concepts/[newId].scroll).
3. Use the Designer for autocomplete support.
4. Submit a pull request.

Web Method

1. Fork this repository.
2. Visit: https://github.com/[yourGithubUserName]/pldb/new/main/concepts
3. Use the Designer.
4. Submit a pull request.

Updating a Language

Click the edit button on the top right of a page and edit the language.

Adding a New Measure

Modify code/measures.parsers and add at least one measurement in a concepts file, then submit a pull request.

🚀 Building the Site Locally

git clone https://github.com/breck7/pldb
cd pldb
# Install dependencies (initial setup)
npm i -g cloc
npm install .
# Run tests (optional)
npm run test
# Build the site
npm run build
# Format changes before committing
npm run format

🔍 Repository Structure

• concepts: Contains the ScrollSet with one file per language/concept.
• code/measures.parsers: Defines the schema for measurements in the ScrollSet.
• Language Stats: See detailed language statistics at PLDB Stats.

📄 Citation

All sources for PLDB are listed on the Acknowledgements page.

💬 About PLDB

PLDB is a comprehensive database on programming languages for:

1. Programming Language Creators: Discover data-driven insights to enhance language design by referencing historical data from thousands of languages.
2. Programming Language Users: Gain a strategic perspective on the programming language landscape to advance projects and career goals.

Get Involved | GitHub Repository

Acknowledgements

PLDB is powered by many contributors and various open-source projects. Thank you to all! Full list on the Acknowledgements page.

Rankings Algorithm

PLDB ranks languages based on a composite score from five broad categories. The ranking algorithm details can be explored in The Rankings Algorithm.

📝 Release Notes

See major updates and breaking changes in the Release Notes.

History

Originally launched by Breck Yunits in 2017.