title PLDB: a Programming Language Database

import code/ciBadges.scroll

• PLDB is a public domain database and website containing over 135,000 facts about over 4,000 programming languages.

• This repo contains the entire database, code, and website for https://pldb.com.

To analyze the data

• The PLDB database is freely available:

• As CSV: https://pldb.com/pldb.csv
• As JSON: https://pldb.com/pldb.json
• The JSON file is also available via npm: javascriptCode // npm install pldb console.log(require("pldb").javascript.appeared)

• Documentation for the CSV is available here: https://pldb.com/docs/csv.html.

To add a new language

• Easy method: https://pldb.com/create.html
• Advanced method: Create a new file in database/things with a unique URL friendly filename ending in .pldb and send a pull request.

To update a language

• Easy method: https://pldb.com/
• Advanced method: Edit the corresponding database/things/*.pldb file and send a pull request.

To add a new column

• Advanced method: Edit or create a new file in database/grammar and add at least 1 example to an entity in database/things and send a pull request.

To add a new feature

• Advanced method: Create a new file in database/features like the other files in there. Then add your new feature to the database/grammar/features.grammar file. Try to add data from at least 10 languages along with your new feature.

To build the full site locally

code git clone https://github.com/breck7/pldb cd pldb npm install . npm i -g cloc npm run build

Run tests

npm run test

Start the dev server

npm run local

After you make changes and before you commit make sure to run:

npm run format

To explore this repo

• The most important folder is database/things/, which contains a file for each entity. The folder database/grammar/ contains the grammar files (schema) for the database.
• The website content is in the site folder.
• The code folder contains importer scripts and other code for the database and site.
• You can see the cloc language stats on this repo at https://pldb.com/pages/about.html.

To cite PLDB

• PLDB content is published to the public domain and you can use it freely. If needed, here are 3 options for citing PLDB: code https://pldb.com code PLDB contributors. (2022) - "PLDB: a Programming Language Database". Retrieved from: 'https://pldb.com' [Online Resource] code @article{pldb, author = {PLDB contributors}, title = {PLDB: a Programming Language Database}, journal = {PLDB}, year = {2022}, note = {https://pldb.com} }

• All sources for PLDB can be found here: https://pldb.com/pages/acknowledgements.html