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Show HN: New world record – verified Goldbach Conjecture up to 4*10^18+7*10^13

https://medium.com/@jay_gridbach/grid-computing-shatters-world-record-for-goldbach-conjecture-verification-1ef3dc58a38d
91•jay_gridbach•3h ago•34 comments

Show HN: I made a Doom-like game fit inside a QR code

https://github.com/Kuberwastaken/backdooms
421•kuberwastaken•17h ago•121 comments

Show HN: Undercutf1 – F1 Live Timing TUI with Driver Tracker, Variable Delay

https://github.com/JustAman62/undercut-f1
9•deltaknight•1h ago•2 comments

Show HN: I built a tool to find pain points in questions and generate SaaS ideas

https://painpointfinder.com/
2•carlosov•1h ago•0 comments

Show HN: Parqv – Interactive TUI Parquet Visualizer

https://github.com/sanspareilsmyn/parqv
2•sanspareilsmyn•1h ago•0 comments

Show HN: (bits) of a Libc, Optimized for Wasm

https://github.com/ncruces/go-sqlite3/tree/main/sqlite3/libc
71•ncruces•15h ago•12 comments

Show HN: Attune - Build and publish APT repositories in seconds

https://github.com/attunehq/attune
86•ilikebits•17h ago•28 comments

Show HN: Make your bookmarks smarter with AI

https://apps.apple.com/us/app/eyeball-magic-bookmarking/id6670705634
4•quinto_quarto•5h ago•0 comments

Show HN: AgentAPI – HTTP API for Claude Code, Goose, Aider, and Codex

https://github.com/coder/agentapi
153•hugodutka•1d ago•14 comments

Show HN: LTE-connected IoT module with remote programming and NL data analysis

https://www.youtube.com/watch?v=3L_OU-fMW_w
25•siliconwitch•1d ago•19 comments

Show HN: Somehash – A Blurhash-inspired exploration

https://travisbumgarner.dev/blog/somehash
18•theogravity•3d ago•1 comments

Show HN: Unsure Calculator – back-of-a-napkin probabilistic calculator

https://filiph.github.io/unsure/
915•filiph•4d ago•161 comments

Show HN: I made a game using mazes generated by ChatGPT

https://byronknoll.com/mazegpt.html
4•byronknoll•10h ago•2 comments

Show HN: Zuni (YC S24) – AI Copilot for the Browser

https://zuni.app
17•willgtaylor•1d ago•10 comments

Show HN: I built a simple, fast transit app for the Bay Area

https://apps.apple.com/us/app/commuter-bay-area-transit/id6743379862
7•aryamansharda•16h ago•1 comments

Show HN: Plandex v2 – open source AI coding agent for large projects and tasks

https://github.com/plandex-ai/plandex
245•danenania•2d ago•79 comments

Show HN: We Put Chromium on a Unikernel (OSS Apache 2.0)

https://github.com/onkernel/kernel-images
130•juecd•2d ago•46 comments

Show HN: Dirb – Directory in Bio

https://dirb.io
2•Oxidome•14h ago•0 comments

Show HN: Resonate – real-time high temporal resolution spectral analysis

https://alexandrefrancois.org/Resonate/
76•arjf•3d ago•30 comments

Show HN: Torque – A lightweight meta-assembler for any processor

https://benbridle.com/projects/torque.html
78•benbridle•3d ago•30 comments

Show HN: HN Watercooler – listen to HN threads as an audio conversation

https://onetake-ai.github.io/hackernews-watercooler/
50•sebastiennight•1d ago•56 comments

Show HN: val – An arbitrary precision calculator language

https://github.com/terror/val
34•crap•1d ago•19 comments

Show HN: I made a Chrome extension to see what's working on any TikTok profile

https://www.tokanalyzr.com
2•thefisola•17h ago•0 comments

Show HN: Resurrecting Infocom's Unix Z-Machine with Cosmopolitan

https://christopherdrum.github.io/posts/2025/04/porting-infocom-with-cosmo
156•ChristopherDrum•5d ago•50 comments

Show HN: Startup Success Calculator

https://app.tactyqal.com
17•parth79•2d ago•4 comments

Show HN: Any API to MCP Server tools converter

https://api200.co/mcp
4•rngk•19h ago•0 comments

Show HN: I built a deep learning engine from scratch in Python

https://github.com/whitegra/dolphin
29•gmwhitebox_dev•2d ago•2 comments

Show HN: Stadium Crowd Scale Visualise Large Groups of People

https://davkap92.github.io/crowdscale/
9•davkap92•4d ago•0 comments

Show HN: Weblook – a headless webapp screenshot tool written in Rust

https://github.com/TrippingKelsea/weblookrs
5•TheKelsbee•1d ago•0 comments

Show HN: MCP-Shield – Detect security issues in MCP servers

https://github.com/riseandignite/mcp-shield
134•nick_wolf•4d ago•39 comments
Open in hackernews

Show HN: val – An arbitrary precision calculator language

https://github.com/terror/val
34•crap•1d ago
Wrote this to learn more about the `chumsky` parser combinator library, rustyline, and the `ariadne` error reporting crate.

Such a nice DX combo for writing new languages.

Still a work in progress, but I thought I'd share :)

Comments

jasonjmcghee•1d ago
Hey nice! We have similar interests. I built something similar, but with way less calculator functionality than you did :D

But the main idea I was going for was real-time JIT evaluation with rendered errors (specifically learning / using cranelift JIT) - less to do with the calculator aspect.

I ended up choosing miette for errors.

https://github.com/jasonjmcghee/basic-treesitter-cranelift-j...

occamatl•1d ago
> sqrt(10^100)-1 -> 100000000000000000000000000000000000000000000000000

Not what I expected.

emaro•1d ago
In the readme it says it uses double precision for numbers. Also not quite whet I expected from 'arbitrary precision'.
chriswarbo•1d ago
Hmm, yeah. It cites `bc` as prior art, which is quite widely used; but another interesting arbitrary-precision calculator is spigot https://www.chiark.greenend.org.uk/~sgtatham/spigot/spigot.h...
mananaysiempre•1d ago
Also the AOSP calculator, of course[1,2,3].

[1] https://chadnauseam.com/coding/random/calculator-app

[2] https://dl.acm.org/doi/10.1145/2911981

[3] https://dl.acm.org/doi/10.1145/3385412.3386037

emmelaich•1d ago
Ivy does big numbers (not arbitrary) but does rationals too. It's an APL subset.

    0.1 + 0.2
    3/10
https://github.com/robpike/ivy
lttlrck•19h ago
the addition of astro_float fixed this.
primitivesuave•1d ago
The UI is awesome, amazing work! However, arbitrary precision implies that there is no fixed upper limit to the number of digits - simple tests like `0.1 + 0.2 == 0.3` and `2^53 == 2^53 + 1` (both produce "false") indicates you're still using IEEE 754 double precision floats.

If "arbitrary precision" is not as important to you as "high precision", a 128 bit decimal has enough precision for 99% of real-world applications.

crap•1d ago
Thanks for checking it out! Should have been more clear that this is actively being worked on. This is ultimately the goal, and I'm currently working on integrating `astro_float` as the base for numbers.
primitivesuave•1d ago
That is awesome, I look forward to following the project and hopefully contributing! I became a better Rust programmer from reading your code :)
jdhwosnhw•1d ago
Do you mean, the first returns false and the second returns true?
primitivesuave•1d ago
Ah you're right, thank you for pointing it out!

In the previous version of this comment (where I was still reading it incorrectly) I added a fun fact, that the significand of an IEEE 754 double-precision float is only allocated 52 bits, but the "hidden bit trick" provides an extra bit of precision when the normalized form starts with 1.

johannesrexx•9h ago
Rewrite it like so

> 1/10 + 2/10 == 3/10 true >

I_complete_me•1d ago
I wish you well. And I clicked you a star on github. Keep up the good work.
crap•1d ago
Thanks to everyone who gave feedback!

Arbitrary precision is now supported in 0.3.0 after integrating the `astro_float` (https://docs.rs/astro-float/latest/astro_float/index.html) `BigFloat` type as the base for numbers in the language.

Still working out the kinks, but its live so give it a try!

lttlrck•1d ago
This is cool.

It love to have to base conversion functions, even if it's print only. Does that fit at all?

lttlrck•19h ago
and different input base notations, 0x, o, 0b etc
crap•17h ago
This definitely fits, base conversion is on the roadmap!
librasteve•2h ago
very cool, welcome to the small club of CLI calculator authors! before I read this I knew of frink and crag (https://raku.land/zef:librasteve/App::Crag since you ask)

Crag is built on raku so has some neat tricks up its sleeve - you can see Crag of the Day to see some in action...

  crag '0.1+0.2=0.2'   #True (arbitrary precision)
  crag '₃₆123.45'      #3F.G77777  (base 36)
  crag 'e ** (i * π) =~= -1'   #True  (math symbols, complex numbers)
  crag '0rMCMXLIV'     #1944 (Roman numerals)
  crag '^<௪௨ mph>'     #42mph  (Unicode and units)
hee hee