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Any Color You Like: NIST Scientists Create 'Any Wavelength' Lasers

https://www.nist.gov/news-events/news/2026/04/any-color-you-nist-scientists-create-any-wavelength...
54•rbanffy•1h ago•20 comments

The electromechanical angle computer inside the B-52 bomber's star tracker

https://www.righto.com/2026/04/B-52-star-tracker-angle-computer.html
215•NelsonMinar•6h ago•67 comments

Thoughts and feelings around Claude Design

https://samhenri.gold/blog/20260418-claude-design/
149•cdrnsf•3h ago•96 comments

Optimizing Ruby Path Methods

https://byroot.github.io/ruby/performance/2026/04/18/faster-paths.html
24•weaksauce•1h ago•10 comments

Modern Common Lisp with FSET

https://fset.common-lisp.dev/Modern-CL/Top_html/index.html
42•larve•3d ago•1 comments

Migrating from DigitalOcean to Hetzner

https://isayeter.com/posts/digitalocean-to-hetzner-migration/
633•yusufusta•9h ago•328 comments

State of Kdenlive

https://kdenlive.org/news/2026/state-2026/
311•f_r_d•10h ago•106 comments

College instructor turns to typewriters to curb AI-written work

https://sentinelcolorado.com/uncategorized/a-college-instructor-turns-to-typewriters-to-curb-ai-w...
77•gnabgib•3h ago•68 comments

Show HN: MDV – a Markdown superset for docs, dashboards, and slides with data

https://github.com/drasimwagan/mdv
74•drasim•7h ago•29 comments

Michael Rabin has died

https://en.wikipedia.org/wiki/Michael_O._Rabin
367•tkhattra•3d ago•78 comments

Traders placed over $1B in perfectly timed bets on the Iran war

https://www.theguardian.com/world/2026/apr/18/iran-war-bets-ethics-concerns
145•trocado•4h ago•96 comments

Sumida Aquarium Posts 2026 Penguin Relationship Chart, with Drama and Breakups

https://www.sumida-aquarium.com/special/sokanzu/en/2026/
145•Lwrless•3d ago•5 comments

PgQue: Zero-Bloat Postgres Queue

https://github.com/NikolayS/pgque
52•gmcabrita•5h ago•4 comments

Floating Point Fun on Cortex-M Processors

https://danielmangum.com/posts/floating-point-cortex-m/
21•hasheddan•1d ago•1 comments

Opus 4.7 to 4.6 Inflation is ~45%

https://tokens.billchambers.me/leaderboard
378•anabranch•6h ago•397 comments

UpCodes (YC S17) is hiring SDRs to help make construction more productive

https://up.codes/careers?utm_source=HN
1•Old_Thrashbarg•5h ago

Show HN: SmallDocs - Markdown without the frustrations

37•FailMore•3d ago•22 comments

Graphs that explain the state of AI in 2026

https://spectrum.ieee.org/state-of-ai-index-2026
58•bryanrasmussen•5h ago•38 comments

Show HN: AI Subroutines – Run automation scripts inside your browser tab

https://www.rtrvr.ai/blog/ai-subroutines-zero-token-deterministic-automation
18•arjunchint•1d ago•2 comments

Scientists discover "cleaner ants" that groom giant ants in Arizona desert

https://www.sciencedaily.com/releases/2026/04/260414075641.htm
63•t-3•3d ago•25 comments

80386 Memory Pipeline

https://nand2mario.github.io/posts/2026/80386_memory_pipeline/
72•wicket•4d ago•11 comments

Show HN: Remoroo. trying to fix memory in long-running coding agents

https://www.remoroo.com
20•adhamghazali•4d ago•3 comments

4-bit floating point FP4

https://www.johndcook.com/blog/2026/04/17/fp4/
29•chmaynard•5h ago•16 comments

Amiga Graphics Archive

https://amiga.lychesis.net/
223•sph•16h ago•66 comments

Understanding the FFT Algorithm (2013)

https://jakevdp.github.io/blog/2013/08/28/understanding-the-fft/
41•peter_d_sherman•3d ago•3 comments

Fuzix OS

https://www.fuzix.org/
68•DeathArrow•7h ago•24 comments

Category Theory Illustrated – Orders

https://abuseofnotation.github.io/category-theory-illustrated/04_order/
219•boris_m•15h ago•57 comments

It's OK to compare floating-points for equality

https://lisyarus.github.io/blog/posts/its-ok-to-compare-floating-points-for-equality.html
165•coinfused•4d ago•113 comments

Show HN: I made a calculator that works over disjoint sets of intervals

https://victorpoughon.github.io/interval-calculator/
285•fouronnes3•21h ago•49 comments

Why Japan has such good railways

https://worksinprogress.co/issue/why-japan-has-such-good-railways/
271•RickJWagner•10h ago•268 comments
Open in hackernews

Using Coalton to implement a quantum compiler (2022)

https://coalton-lang.github.io/20220906-quantum-compiler/
57•andsoitis•11mo ago

Comments

reikonomusha•11mo ago
Coalton remains in active development and is used at a couple companies. Like a handful of others in recent history, it's a language that's designed and implemented directly against the needs of either actual products or (PLT-unrelated) research initiatives, so things like performance aren't an afterthought.

There are a few software engineering positions in the Boston, MA area to work on the Coalton compiler (algebraic type systems, optimizations, high-performance computing, dev tools, ...) and to use it for autonomous, firm realtime systems (unrelated to quantum). Email in profile if interested.

joshjob42•11mo ago
Is Coalton compatible broadly compatible with the features of CIEL? I've been interested in getting into CL, and CIEL seems like a very nice batteries-included way to do that. But Coalton is also quite interesting and brings some features that may be useful. But I'm such a novice in this particular space (I'm mostly a Julia user with Python and some elisp) that I can't quite tell. Obviously I could start learning CL using CIEL and later play with Coalton but was just wondering if you knew how they may play together.
reikonomusha•11mo ago
Coalton can be used wherever (almost any) Common Lisp can be used: mixed in, side by side, exclusively, as an library, etc.

CIEL doesn't presently ship any native Coalton interfaces, so all invocations of CIEL within Coalton code would have to be in a "lisp" form, which is like Rust's "unsafe".

    (define (some-coalton-function arg)
      ;; break out to Lisp
      (lisp String (arg)
        ...CIEL stuff here...))
On ordinary safety settings, the String declaration on the Lisp code will be checked at runtime so that wrong types don't leak back into the surrounding/calling Coalton code.

Conversely, Coalton code can be freely used within Common Lisp code regardless of whether it uses CIEL.

dang•11mo ago
A couple bits of past discussion:

Using Coalton to Implement a Quantum Compiler - https://news.ycombinator.com/item?id=36413832 - June 2023 (1 comment)

Using Coalton to Implement a Quantum Compiler - https://news.ycombinator.com/item?id=32741928 - Sept 2022 (1 comment)