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Show HN: Quotatious – A Wordle and hangman inspired game

https://www.quotatious.com/
2•jcusch•59m ago•0 comments

Show HN: From Photos to Positions: Prototyping VLM-Based Indoor Maps

https://arjo129.github.io/blog/5-7-2025-From-Photos-To-Positions-Prototyping.html
2•accurrent•1h ago•0 comments

Show HN: Certimon – Free Telegram bot to monitor SSL certificate expiry

https://certimon.com/
3•boros2me•2h ago•0 comments

Show HN: AirBending – Hand gesture based macOS app MIDI controller

https://www.nanassound.com/products/software/airbending
80•bepitulaz•1d ago•21 comments

Show HN: An AI tool that lets you interact with your terminal in plain English

https://github.com/Kaleab-Ayenew/vity
3•kalishayish•6h ago•0 comments

Show HN: Distapp. Manage and distribute Android, iOS and Desktop app

https://distapp.lhf.my.id
2•yunusefendi52•6h ago•0 comments

Show HN: BunkerWeb – the open-source and cloud-native WAF

https://docs.bunkerweb.io/latest/
95•bnkty•1d ago•30 comments

Show HN: MCP-123, a 2-line MCP server/client (Windows-friendly)

https://github.com/Tylersuard/MCP-123
12•tylersuard•18h ago•1 comments

Show HN: I AI-coded a tower defense game and documented the whole process

https://github.com/maciej-trebacz/tower-of-time-game
298•M4v3R•1d ago•145 comments

Show HN: A cross-platform terminal emulator written in Java

https://github.com/sebkur/forceterm
62•sebkur•4d ago•20 comments

Show HN: Fast Thermodynamic Calculations in Python

https://dlr-institute-of-future-fuels.github.io/gaspype/
56•Saloc•1d ago•11 comments

Show HN: Tinykv – Minimal file-backed key-value store for Rust

https://crates.io/crates/tinykv
23•hasanyildiz•1d ago•4 comments

Show HN: ASCII Fireworks

https://asciifireworks.com/
13•theli0nheart•21h ago•0 comments

Show HN: I Built a Local-First AI Chat App with Advanced RAG

5•vinhnx•11h ago•3 comments

Show HN: HomeBrew HN – Generate personal context for content ranking

https://www.hackernews.coffee/
122•azath92•2d ago•48 comments

Show HN: Kuvasz – an open-source uptime and SSL monitoring service

https://kuvasz-uptime.dev/
26•csirkezuza•1d ago•0 comments

Show HN: Dstpierre/tpl a tiny lib making Go's templates more tolerable

https://github.com/dstpierre/tpl
3•dstpierre•13h ago•0 comments

Show HN: I built sinkedin – a LinkedIn but for flauting failures and screwups

https://www.sinkedin.app/
29•preetsojitra•1d ago•11 comments

Show HN: Jobs by Referral: Find jobs in your LinkedIn network

https://jobsbyreferral.com/
174•nicksergeant•4d ago•64 comments

Show HN: CSS generator for a high-def glass effect

https://glass3d.dev/
415•kris-kay•3d ago•117 comments

Show HN: A continuation of IRS Direct File that can be self-hosted

https://github.com/openfiletax/openfile
242•elijahwright_•5d ago•33 comments

Show HN: I rewrote my notepad calculator as a local-first app with CRDT syncing

https://numpad.io
44•tonyonodi•5d ago•19 comments

Show HN: I built the tool I wished existed for moving Stripe between countries

https://www.stripemove.com/
108•felphos•4d ago•53 comments

Show HN: Mochia, a virtual pet browser game, built with Rust, SolidJS, Postgres

https://mochia.net/
22•lemphi•2d ago•9 comments

Show HN: Built a lovable clone to see what makes agentic apps tick

https://github.com/beam-cloud/lovable-clone
6•llom2600•1d ago•1 comments

Show HN: Spegel, a Terminal Browser That Uses LLMs to Rewrite Webpages

https://simedw.com/2025/06/23/introducing-spegel/
422•simedw•4d ago•180 comments

Show HN: Core – open source memory graph for LLMs – shareable, user owned

https://github.com/RedPlanetHQ/core
110•Manik_agg•4d ago•42 comments

Show HN: We made a tool to reduce echo chambers on social media

https://www.tandfonline.com/doi/full/10.1080/29974100.2025.2517191
3•academic_84572•22h ago•0 comments

Show HN: Recivo – Receive Emails Programmatically

https://recivo.email/
27•WilcoKruijer•2d ago•1 comments

Show HN: A Dockerized Linux Mirror Server for Arch and Ubuntu

https://github.com/LunaStev/mirror-docker
4•LunaStev•1d ago•0 comments
Open in hackernews

Show HN: val – An arbitrary precision calculator language

https://github.com/terror/val
34•crap•2mo 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•2mo 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•2mo ago
> sqrt(10^100)-1 -> 100000000000000000000000000000000000000000000000000

Not what I expected.

emaro•2mo ago
In the readme it says it uses double precision for numbers. Also not quite whet I expected from 'arbitrary precision'.
chriswarbo•2mo 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•2mo 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•2mo 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•2mo ago
the addition of astro_float fixed this.
primitivesuave•2mo 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•2mo 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•2mo 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•2mo ago
Do you mean, the first returns false and the second returns true?
primitivesuave•2mo 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•2mo ago
Rewrite it like so

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

I_complete_me•2mo ago
I wish you well. And I clicked you a star on github. Keep up the good work.
crap•2mo 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•2mo ago
This is cool.

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

lttlrck•2mo ago
and different input base notations, 0x, o, 0b etc
crap•2mo ago
This definitely fits, base conversion is on the roadmap!
librasteve•2mo 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