____s·May 31, 2025
You should share link: https://github.com/siraben/hasktran
In Fractran Interpretersiraben
hasktran
Haskell2021–2025
siraben / hasktran
hasktran
A compiler for FRACTRAN written in Haskell.
2Distinct people
3Mentions
1Explicit recommenders
8GitHub stars
What to know before exploring
What it is
A compiler for FRACTRAN written in Haskell.
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
One of my favorite esolangs is FRACTRAN[0], because at first glance it seems impossible to write any programs in, but a little insight from number theory (concerning prime…
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Also in these discussions
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This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year3 dated mentions
Observed mentions: 2021-05-21 05:03:21 UTC to 2025-05-31 13:10:44 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 1 | 0 | 1 |
What Hacker News says
3 sourcesA few years ago, I wrote a compiler for FRACTRAN written in Haskell[0] (translated from Common Lisp) with an associated blog post[1]. Using the tagless-final style you can write a simple program like this:
sumTo :: FracComp repr => Integer -> [repr [Rational]]
sumTo n = [addi "c" 0, addi "n" n, while (jge "n" 0) [adds "c" "n", subi "n" 1]]
And the compiler would output this:
λ> runAssembler (sumTo 10) -- Program length: 31
Right [847425747 % 2,13 % 3,19 % 13,11 % 3,11 % 29,31 % 11,41 % 31,23
% 11,23 % 47,2279 % 23,59 % 301,59 % 41,67 % 413,329 % 67,61 % 59,73 %
61,83 % 73,71 % 61,71 % 97,445 % 71,707 % 89,103 % 5353,103 % 83,109 %
5459,5141 % 109,107 % 103,113 % 749,113 % 19,131 % 113,29 % 131,127 %
113]
λ> runAsm (sumTo 10)
[(Prime 97,55),(Prime 107,1)]
[0] https://github.com/siraben/hasktran
[1
Read the rest
One of my favorite esolangs is FRACTRAN[0], because at first glance it seems impossible to write any programs in, but a little insight from number theory (concerning prime factorization) makes it tractable. I even wrote a compiler for FRACTRAN in Haskell[1].
[0] https://en.wikipedia.org/wiki/FRACTRAN
[1] https://github.com/siraben/hasktran
In A brief introduction to esoteric programming languages