Hello friends,
Tomorrow in the regular Qi meeting we will be talking about some recent developments that are likely to be of broad interest, including:
- A proof-of-concept (in fact, two of them, using totally separate approaches) of achieving "multi-streams" in Qi, that is, streams that can yield any number of values at any step, to provide performant deforested functional operations on sequential data.
- Progress on implementing deforested list APIs that mirror
racket/list, including potentially a standalone libraryebbthat provides this for your ordinary Racket code. - Considerations around stream vs list semantics for the design of functional APIs.
The multi-streams proof-of-concept is my first deep dive into the continuation-passing style, and I'm eager to share my learnings. The approach we're using to achieve multi-streams is neat --- some tentative names we have for it include "Pacman continuations" and "Call stack Tetris." Join us tomorrow to learn more 
Please stop by if any of these sound interesting to you.
2026-04-17T18:00:00Z
(Please note: if you join before an admin gets there, you might need to refresh your browser subsequently to end up in the same meeting as the other attendees!)
Sid & the Qiwis