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The Egison Programming Language

www.egison.org Software & code Software projects Software engineering Candidate
Screenshot of www.egison.org captured 2026-07-20
Page preview · captured 2026-07-20

Resurfaced independently across 3 calendar years, with breakout response in 2 of them.

submissions
3
submitters
3
observed span
2018–2023
peak thread · 70 comments
99 pts
latest 20+ return · 2023-04-29
99 pts

Submission timeline

2007–2026

One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.

First comments on top threads

HN comment order

Here is my brief explanation of the example given on the website in order to clear up some confusion, that I gleaned from the thesis paper. Admittedly, this language does require knowledge of Haskell to really comprehend: -- Extract all twin primes from the infinite list of prime numbers with pattern matching! def twinPrimes := matchAll primes as list integer with | _ ++ $p :: #(p + 2) :: _ -> (p, p + 2) "matchAll is composed of…

> Egison is a programming language that realizes non-linear pattern-matching against non-free data types. It's a what? Can someone ELI5 this for a lowly Python and JS dev - why would I want this? ---- I watched a talk about Scala's future [0] recently, in which the presenter compared the taglines of a few different languages (Go, Rust, Erlang, Scala), and how they relate to business pains or non-academic problems. His conclusion about Scala's tagline - "Scala combines object-oriented and…

vosper·79-point thread·

The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.

Breakout years
2

100+ points or 50+ comments

Total points
180

reference only — not used in Hall rules or ranking

Total comments
137

reference only — not used in Hall rules or ranking

Every submission

DateTitle as submittedByPointsComments
2018-07-13The Egison Programming LanguageFirst breakoutafshinmeh7967
2021-03-09The Egison Programming Languagempweiher20
2023-04-29The Egison Programming LanguageBest thread · Latest 20+ point returnubavic9970