# pyret

pyret is an actively used programming language created in 2011.

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- pyret ranks in the top 50% of languages
- the pyret website
- pyret on github
- pyret first appeared in 2011
- I have 20 facts about pyret. what would you like to know? 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 November 16th, 2019