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Lean is an incredible platform for mathematics, but it is also an extremely capable programming language. By combining ...

Lean's metaprogramming promises powerful capabilities we've yet to dream of --- aye, there's the rub. In this talk, we'll imagine ...

Code Generation via Meta-programming in Dependently Typed Proof Assistants (Video, WITS 2026) Mathis Bouverot-Dupuis, and ...

This talk will discuss CSLib's locally nameless formalization of lambda calculi, which currently includes STLC and System F with ...

The Lean standard library contains the basic concepts that underpin all Lean formalization and programming projects, like logical ...

Want to add functionality to classes, methods, and properties without changing their source code? Meet decorators—a powerful ...

Note from the organizers: Apologies for the poor audio quality, we had some problems with our streaming microphone at this ...

Coffee Compiler Club meeting on Jan 30, 2026 Typical rambling conversation loosely related to compilers, language runtimes, ...

Handling Scope Checks: A Comparative Framework for Dynamic Scope Extrusion Checks (Video, POPL 2026) Michael Lee, ...

Manuel presented a talk about ASTS to the other AI Baguetteers. Learn advanced techniques that will change your AI coding ...

Lightning Talks are presentations restricted to five minutes or less. Speakers plug in their laptops and get started immediately.

Lessons from Building an Auto-Active Verifier in Lean (Video, Dafny 2026) George Pîrlea, Vladimir Gladshtein, Qiyuan Zhao, and ...

The Lean standard library contains the basic concepts that underpin all Lean formalization and programming projects, like logical ...

Lean4Lean: Mechanizing the Metatheory of Lean (Video, WITS 2026) Mario Carneiro (Chalmers University of Technology) ...

Session with the Rocq Development Team (Video, RocqPL 2026) Matthieu Sozeau, Yann Leray, and Gaetan Gilbert (Inria; ...

I'm VP of Community at Zig Software Foundation. I stream not only to work on my projects, but also to chat with people about all ...

Rustlings: https://rustlings.rust-lang.org/ The Rust Programming Language Book: https://rust-book.cs.brown.edu Zoeae: ...

Implementing parametricity in Rocq-ELPI (Video, RocqPL 2026) Cyril Cohen, and Vojtěch Štěpančík (Inria, CNRS, ENS Lyon, ...

Wishlist Crop and Claw 2 on Steam: https://store.steampowered.com/app/3065270/Crop_and_Claw_2/ Streamed on Twitch at ...

Deduce a template class with reduced number of template parameters Hey guys! Hopefully you found a solution that helped you!

Verification of Templated Code in C++ (Video, RocqPL 2026) Gregory Malecha, David Swasey, and Simon Hudon (Skylabs AI; ...

Verifying Dependent Type-checkers (Video, WITS 2026) Meven Lennon-Bertrand (Inria – Université Paris Cité) Abstract: I am a bit ...

Martín Venegas leads a discussion of Chapter 21 ("Translating R code") from Advanced R by Hadley Wickham on 2026-01-27, ...

January 2026 Newsletter: KDAB Training Day, Meeting C++ 2025 Videos, KDSoap Video series, 2026 Training, News, Events ...

Come Chat on Twitch (I don't look at Youtube chat much) https://www.twitch.tv/elementaal.