Yhn first seen 19 h ago, last 7 h ago, peak #22
Arrows to arrows: rethinking categories as queries
Original: Arrows to arrows, categories to queries (2025)
A technical essay titled 'Arrows to arrows, categories to queries' argues for viewing Haskell's arrow abstraction through the lens of relational algebra and database queries, rather than category theory alone. Hacker News readers are debating the piece, weighing its reframing of how effectful computation can be modelled against prior work on arrows and query languages.
Why now: The essay's novel theoretical reframing of a well-known functional programming abstraction has sparked technical debate among developer communities.
Haskellcategory theoryrelational algebraHacker News
Rank over time, top of the chart is #1. 50 snapshots from 19 h ago to 7 h ago.
Evidence
- Arrows to arrows, categories to queries (2025) · firstbase · 69
API: https://socialmediatrends-api.osmike.com/v1/trends/4820518