Top all-time · #10371
Benjamin Hodgson
Personal blog · benjamin.pizza/postsprogramming
Benjamin Hodgson's personal blog at benjamin.pizza covers programming. Since 2017, 7 different Hacker News readers have linked it 8 times, most often “Recursion Without Recursion – Tearing Down Trees in One Line of Code”. It is still writing: the last post was on 2025-05-21, and you can follow it by feed.
Too few sampled comments (1) to say how often HN recommends it.?
Why HN links it
HN readers link this blog's post on a 'fourth variance' in type theory, which goes beyond the usual covariance and contravariance. The comment cites it as a reference and does not evaluate it.
Summarised by Claude from a sample of 1 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Most-linked posts?
- Recursion Without Recursion – Tearing Down Trees in One Line of Code3 people · 3 mentions · first linked 2017-11-13
- The Fourth Type of Variance2 people · 2 mentions · first linked 2019-01-12
What Hacker News says?
The other person also mentioned this. It's called invariance. There's also a fourth variance: https://www.benjamin.pizza/posts/2019-01-11-the-fourth-type-...
Comment linking /posts/2019-01-11-the-fourth-type-of-variance.html
on “Functor, Applicative, and Monad”Submitted The Fourth Type of Variance as a story · 51 points
HN discussionSubmitted Parsing Prolog With Pidgin, a parser combinator library (2019) as a story · 3 points
HN discussionSubmitted Recursion Without Recursion – Tearing Down Trees in One Line of Code as a story · 3 points
HN discussionSubmitted Zooming in on Field Accessors as a story · 2 points
HN discussionSubmitted Recursion Without Recursion as a story · 2 points
HN discussionSubmitted Recursion Without Recursion as a story · 2 points
HN discussionSubmitted Zip-Folding as a story · 1 points
HN discussion