pyret - Programming language

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pyret is a programming language created in 2011 by Joe Gibbs Politz.

#462on PLDB

13Years Old

Download source code:

git clone https://github.com/brownplt/pyret-lang

The Pyret language.

pyret website
pyret is developed on GitHub and has 924 stars
pyret first developed in Brown University
pyret.org was registered in 2011

Example 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

Example from hello-world:

print('Hello World')

Language features

Feature	Supported	Token	Example
Strings	✓	'	'Hello world'
Print() Debugging	✓	print