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hazel is an open source programming language created in 2016 by Cyrus Omar.

#595on PLDB 8Years Old
Download source code:
git clone
Homepage · Source Code

Hazel is a live functional programming environment rooted in the principles of type theory.

Example from the web:
let v = {} in v : num

Language features

Feature Supported Example Token
Typed Holes

View source

- Build the next great programming language · About · Resources · Acknowledgements · Part of the World Wide Scroll