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Coalton Playground: Type-Safe Lisp in the Browser


I wanted to share a side project I’ve been tinkering with for a while and finally got around to shipping: Coalton Playground – basically a web-based REPL for Coalton, which is this inte…

If you haven’t heard of it, Coalton is kind of a weird ( in a good way) mashup – it takes Haskell’s type system and plants it right in the middle of Common Lisp. Or, as the official site puts it: “ Coalton is an efficient, statically typed functional programming language that supercharges Common Lisp “ I threw in some examples to get you started – basic stuff like factorial and fibonacci, plus some fancier things like monads if you’re into that.

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