Hello World in Multiple Languages Extravaganza

This repository collects small "Hello, World!" examples across multiple languages and data formats. The current goal is repository quality: accurate documentation, runnable examples, and lightweight verification that contributors can repeat locally.

Repository Contract

Each language directory should provide:

• a README.md with real run instructions
• at least one runnable or inspectable example
• optional advanced examples or tests
• a task list aligned with the files that actually exist

Naming is intentionally not fully uniform because languages and ecosystems differ. This repository currently uses all of the following patterns:

• hello_world.*
• hello-world.*
• helloworld.*
• language-specific exceptions such as Main.java

If you add a new language, document the chosen naming convention in that language directory instead of forcing a repo-wide rename.

Getting Started

Clone the repository:

git clone https://github.com/silviotorre/helloworld.git
cd helloworld

Examples:

• Python: python python/helloworld.py
• PowerShell: powershell -File powershell/helloworld.ps1
• JavaScript: open javascript/hello-world.html in a browser
• JSON: inspect json/HelloWorld.json with any JSON parser

Implemented Directories

The repository currently contains examples for:

• cmd
• go
• java
• javascript
• json
• kusto
• perl
• powershell
• python
• sql
• vb.net
• yaml

Current Status

Implemented and documented today:

• Cmd
• Go
• Java
• JavaScript
• JSON
• Kusto
• Perl
• PowerShell
• Python
• SQL
• VB.NET
• YAML

Planned future additions:

• Bash
• C
• C#
• Cobol
• F#
• Fortran
• Groovy
• Kotlin
• Matlab
• Node.js
• Q#
• R
• Ruby
• Rust
• Scala
• T-SQL
• U-SQL
• Visual Basic
• XML

Supported Checks

Run the root smoke check from the repository root:

powershell -ExecutionPolicy Bypass -File scripts/smoke-check.ps1

The smoke check validates:

• required files in the implemented directories
• internal README links to local files
• JavaScript HTML script references
• JSON parsing
• YAML parsing when a YAML parser is available in the environment
• Python execution and unittest discovery
• PowerShell sample execution

Checks degrade explicitly when a required tool is not installed.

Contribution Notes

For small contributions:

1. Add a new language directory or improve an existing one.
2. Include a README.md with real run instructions.
3. Update this root README if the set of implemented languages changes.
4. Run the smoke check before opening a PR.

For a starting point, use templates/LANGUAGE_README_TEMPLATE.md.

Project Roadmap

Core repository completion:

• Establish a minimum contract for implemented directories
• Correct broken links and invalid run instructions in main documentation
• Add a root smoke check
• Make Python tests discoverable through standard unittest discovery
• Add GitHub Actions based on the smoke check

Nice to have:

• Add badges to the root README
• Add a project logo
• Add translations
• Add a wiki

Future language additions:

• Expand the list of languages beyond the currently implemented set

Contributors

• Silvio Torre (silviotorre)

License

This project is licensed under the MIT License. See LICENSE.

References

• GitHub Hello World