160. C++ Bookcamp, WG21 April mailing, Contracts, Rust, Circle

With Bjarne Stroustrup, Frances Buontempo, Gianluca Delfino, Joel Daniels, Vladimír Arnošt, Ivor Hewitt, and other colleagues.

Video: https://youtu.be/9JGWjK6UWdA

Notes: https://cppclub.uk/meetings/2023/160/