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Building an efficient hash table in Java

https://bluuewhale.github.io/posts/building-a-fast-and-memory-efficient-hash-table-in-java-by-borrowing-the-best-ideas/
52•birdculture•2h ago

Comments

jbellis•1h ago
Now I'm curious about what fastutil's implementation is doing.
EmberTwin•59m ago
The SWAR (SIMD-within-a-register) numbers are strictly better than the SIMD versions as well as the standard library baseline. Why is that? SIMD should be strictly faster if the machine supports it, since the SWAR max bitwidth is 64, while SIMD starts at 128 bits.

The Java SIMD API used here must not result in using actual SIMD machine code.

I tried Gleam for Advent of Code

https://blog.tymscar.com/posts/gleamaoc2025/
141•tymscar•3h ago•76 comments

Dick Van Dyke turns 100

https://www.theguardian.com/film/2025/dec/13/dick-van-dyke-centenarian-100-mary-poppins-chitty-ch...
56•thunderbong•1h ago•7 comments

Analysis finds anytime electricity from solar available as battery costs plummet

https://pv-magazine-usa.com/2025/12/12/analysis-finds-anytime-electricity-from-solar-available-as...
92•Matrixik•2h ago•72 comments

Cryptids

https://wiki.bbchallenge.org/wiki/Cryptids
59•frozenseven•1w ago•6 comments

Show HN: Trello Clone with Source Code

https://kanban.demo.codegres.com/
12•Codegres•1w ago•4 comments

Useful patterns for building HTML tools

https://simonwillison.net/2025/Dec/10/html-tools/
158•simonw•2d ago•53 comments

Ask HN: How can I get better at using AI for programming?

80•lemonlime227•4h ago•89 comments

EasyPost (YC S13) Is Hiring

https://www.easypost.com/careers
1•jstreebin•3h ago

Ask HN: How do you handle release notes for multiple audiences?

5•glidr_dev•11m ago•0 comments

SSE sucks for transporting LLM tokens

https://zknill.io/posts/sse-sucks-for-transporting-llm-tokens/
26•zknill•4d ago•28 comments

Java FFM zero-copy transport using io_uring

https://www.mvp.express/
84•mands•6d ago•36 comments

Photographer built a medium-format rangefinder

https://petapixel.com/2025/12/06/this-photographer-built-an-awesome-medium-format-rangefinder-and...
136•shinryuu•6d ago•33 comments

Go Proposal: Secret Mode

https://antonz.org/accepted/runtime-secret/
101•enz•3d ago•29 comments

What is the nicest thing a stranger has ever done for you?

https://louplummer.lol/nice-stranger/
191•speckx•2d ago•141 comments

Researchers seeking better measures of cognitive fatigue

https://www.nature.com/articles/d41586-025-03974-w
76•bikenaga•3d ago•21 comments

A Lisp Interpreter Implemented in Conway's Game of Life (2021)

https://woodrush.github.io/blog/posts/2022-01-12-lisp-in-life.html
70•pabs3•17h ago•2 comments

Using Python for Scripting

https://hypirion.com/musings/use-python-for-scripting
54•birdculture•5d ago•44 comments

Z8086: Rebuilding the 8086 from Original Microcode

https://nand2mario.github.io/posts/2025/z8086/
28•nand2mario•5h ago•5 comments

A 'toaster with a lens': The story behind the first handheld digital camera

https://www.bbc.com/future/article/20251205-how-the-handheld-digital-camera-was-born
66•selvan•5d ago•31 comments

GNU Unifont

https://unifoundry.com/unifont/index.html
308•remywang•23h ago•71 comments

Rats Play DOOM

https://ratsplaydoom.com/
376•ano-ther•1d ago•142 comments

Beautiful Abelian Sandpiles

https://eavan.blog/posts/beautiful-sandpiles.html
121•eavan0•4d ago•19 comments

Dynamic Pong Wars

https://markodenic.tech/dynamic-pong-wars/
21•rendall•1w ago•2 comments

Computer Animator and Amiga fanatic Dick Van Dyke turns 100

198•ggm•12h ago•49 comments

How exchanges turn order books into distributed logs

https://quant.engineering/exchange-order-book-distributed-logs.html
111•rundef•5d ago•58 comments

Will West Coast Jazz Get Some Respect?

https://www.honest-broker.com/p/will-west-coast-jazz-finally-get
42•paulpauper•6d ago•27 comments

Show HN: I made a spreadsheet where formulas also update backwards

https://victorpoughon.github.io/bidicalc/
217•fouronnes3•2d ago•102 comments

OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI

https://simonwillison.net/2025/Dec/12/openai-skills/
524•simonw•20h ago•302 comments

Show HN: LinkedQL – Live Queries over Postgres, MySQL, MariaDB

https://github.com/linked-db/linked-ql
18•phrasecode•5d ago•7 comments

Show HN: Tiny VM sandbox in C with apps in Rust, C and Zig

https://github.com/ringtailsoftware/uvm32
181•trj•22h ago•11 comments