https://hackerpaper.kaipfister.de/p/2103.01931/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=43839427urn:hackerpapers:mention:2103.01931:43839427Tue, 29 Apr 2025 23:45:20 GMT<p>Indeed they call for new names, as they encompass far more than iterators. If you read a bit more about them, I think you will be surprised to see the breadth of what these abstractions can be used for. To start, they&#x27;ve been used to build a new compositional foundation for game theory[1], and they can be used to model gradient-based learning in machine learning[2]. As for their simpler applications as getters and setters, they are programmable in the sense that you can think of lens/prism types as interfaces that can be implemented arbitrarily. So you can create your own lenses and combine…</p><p><a href="https://hackerpaper.kaipfister.de/p/2103.01931/">Paper and discussion history</a>. A mention is not an endorsement.</p>cs.LG