# pyret

pyret is an actively used programming language created in 2011. Pyret is a programming language designed to serve as an outstanding choice for programming education while exploring the confluence of scripting and functional programming. It's under active design and development, and free to use or modify.

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- the pyret website
- pyret on github
- pyret first appeared in 2011
- Have a question about pyret not answered here? Email me and let me know how I can help.

### Example code from the web:

data BinTree: | leaf | node(value, left, right) end fun tree-sum(t): doc: "Calculate the sum of node values" cases (BinTree) t: | leaf => 0 | node(v, l, r) => v + tree-sum(l) + tree-sum(r) end where: tree-sum(leaf) is 0 node4 = node(4, leaf, leaf) tree-sum(node(5, node4, leaf)) is 9 end

Last updated January 18th, 2020