[catgary]

I know Koka is more of a research project than anything else, but I think it’s by far the most interesting. Moving to effect handlers, the Perseus ARC algorithm, and identifying “functional-but-in-place” algorithms all feel like game changers.

[ReleaseCandidat]

Yes, Koka is evidently a inspiration for Roc, which uses Perceus, in-place mutation and their effect system is called "abilities". Roc aims to be something like the "practical version" of Koka('s ideas).

[okkdev]

Oh I completely forgot about Koka, I remember looking at it a couple years ago. I'll have to give it a go again. :)