Roy

About

Roy is an experimental programming language that targets JavaScript. It tries to meld JavaScript semantics with some features common in static functional languages:

• Damas-Hindley-Milner type inference
• Whitespace significant syntax
• Simple tagged unions
• Pattern matching
• Structural typing
• Monad syntax

Try the current version below. The code is on GitHub. Follow @roylangjs for news on development.

Try

Roy input

JavaScript

Output

Resources

• IEEE Internet Computing article
• Incomplete docs
• GitHub
• Twitter
• Author's blog
• IRC channel (#roy on Freenode)