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A fragmentary bidirectional type system as a Python library

License: MIT License

Python 98.63% OCaml 1.37%

programming-language functional-language algebraic-data-types pattern-matching python

typy's Introduction

typy

typy is a fragmentary bidirectionally typed language embedded into Python.

Information

The typy.std library implements a number of useful semantic fragments.
See tests directory for examples.
See Omar and Aldrich, GPCE 2016 [1] for a description of how typy is implemented.

Project Status and Contributions

The fragment system was significantly revamped just prior to the GPCE paper, so many previously running examples do not currently work. Working on it!

Subscribe to typy-announce to get occasional updates on the status of typy and the standard library:

https://groups.google.com/d/forum/typy-announce
Contact Cyrus if you're interested in contributing.

Contributors

Cyrus Omar (@cyrus-)

License

Copyright 2016 Cyrus Omar.

typy is released under the permissive MIT License, requiring only attribution in derivative works. See LICENSE for full terms.

References

[1] Cyrus Omar and Jonathan Aldrich. Programmable Semantic Fragments. GPCE 2016. https://github.com/cyrus-/papers/raw/master/typy-2016/typy-2016.pdf

typy's People

Contributors

Stargazers

Watchers

typy's Issues

Set up donation page

Set up chatroom

Discourse? Slack? IRC? Something else? Go with a mailing list?

"Why FP?" page

Comparison table with OCaml

(at least, maybe also Haskell, others?)

Imperative programming stuff

Mutable fields

Reference cells as a degenerate case

Stack assignables

Mutable lists, sets, dicts based on Python stuff underneath

Website

For now, just have everything point to GitHub I guess?

tidy-lang.org
tidylang.org?

Basic manual using Sphinx

readthedocs seems to have a nice skin

figure out how easy it would be to turn it into a printed book? sell it?

Port everything over from typy repository

Basic error reporting infrastructure

Print static errors nicely.

Do an error review pass.

Report run-time errors in terms of original source location? This might be a separate project.

Logo

Python 3.5 ascription syntax support

Finalize README

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