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Copy-and-Patch: A Copy-and-Patch Tutorial

https://transactional.blog/copy-and-patch/tutorial
37•todsacerdoti•3h ago

Comments

shoo•3h ago
the accompanying post "How It Works" is worth reading alongside this tutorial

https://transactional.blog/copy-and-patch/

(key terms: abus[e|ing]: 4, force: 3, trick: 1, chance: 1)

weinzierl•2h ago
I think this technique also lies at the heart of the Cranelift project.

https://cranelift.dev/

aw1621107•5m ago
IIRC Cranelift doesn't use copy-and-patch. It uses e-graphs [0] as part of its optimization pipeline, though.

Closest thing in (relatively) recent news that uses copy-and-patch I can think of is CPython's new JIT.

[0]: https://github.com/bytecodealliance/rfcs/pull/27

re•2h ago
Related:

Copy-and-Patch: Fast compilation for high-level languages and bytecode (2020) https://news.ycombinator.com/item?id=40553448 - June 2024 (51 comments)

A copy-and-patch JIT compiler for CPython - https://news.ycombinator.com/item?id=38769874 - Dec 2023 (68 comments)

Copy-and-Patch: Fast JIT Compilation for SQL, WebAssembly, and Others - https://news.ycombinator.com/item?id=28547057 - Sept 2021 (7 comments)

Don’t Look Up: Sensitive internal links in the clear on GEO satellites [pdf]

https://satcom.sysnet.ucsd.edu/docs/dontlookup_ccs25_fullpaper.pdf
262•dweekly•7h ago•65 comments

Why the push for Agentic when models can barely follow a simple instruction?

https://forum.cursor.com/t/why-the-push-for-agentic-when-models-can-barely-follow-a-single-simple...
88•fork-bomber•1h ago•74 comments

NanoChat – The best ChatGPT that $100 can buy

https://github.com/karpathy/nanochat
1136•huseyinkeles•17h ago•220 comments

Why Study Programming Languages

https://people.csail.mit.edu/rachit/post/why-study-programming-languages/
41•bhasi•3h ago•20 comments

Dutch government takes control of Chinese-owned chipmaker Nexperia

https://www.cnbc.com/2025/10/13/dutch-government-takes-control-of-chinese-owned-chipmaker-nexperi...
452•piskov•22h ago•389 comments

Copy-and-Patch: A Copy-and-Patch Tutorial

https://transactional.blog/copy-and-patch/tutorial
37•todsacerdoti•3h ago•4 comments

Palisades Fire suspect's ChatGPT history to be used as evidence

https://www.rollingstone.com/culture/culture-news/chatgpt-palisades-fire-suspect-1235443216/
110•quuxplusone•5d ago•81 comments

No science, no startups: The innovation engine we're switching off

https://steveblank.com/2025/10/13/no-science-no-startups-the-unseen-engine-were-switching-off/
467•chmaynard•19h ago•328 comments

Sony PlayStation 2 fixing frenzy

https://retrohax.net/sony-playstation-2-fixing-frenzy/
123•ibobev•9h ago•46 comments

All in on MatMul? Don’t Put All Your Tensors in One Basket!

https://www.sigarch.org/dont-put-all-your-tensors-in-one-basket-hardware-lottery/
12•matt_d•5d ago•1 comments

First device based on 'optical thermodynamics' can route light without switches

https://phys.org/news/2025-10-device-based-optical-thermodynamics-route.html
140•rbanffy•5d ago•16 comments

Show HN: SQLite Online – 11 years of solo development, 11K daily users

https://sqliteonline.com/
384•sqliteonline•20h ago•125 comments

Modern iOS Security Features – A Deep Dive into SPTM, TXM, and Exclaves

https://arxiv.org/abs/2510.09272
169•todsacerdoti•14h ago•3 comments

America is getting an AI gold rush instead of a factory boom

https://www.washingtonpost.com/business/2025/10/13/manufacturing-artificial-intelligence/
208•voxleone•18h ago•232 comments

vali, a C library for Varlink

https://emersion.fr/blog/2025/announcing-vali/
28•GalaxySnail•3d ago•9 comments

LLMs are getting better at character-level text manipulation

https://blog.burkert.me/posts/llm_evolution_character_manipulation/
90•curioussquirrel•13h ago•58 comments

New York Times, AP, Newsmax and others say they won't sign new Pentagon rules

https://apnews.com/article/pentagon-press-access-defense-department-rules-95878bce05096912887701e...
183•baobun•6h ago•50 comments

Smartphones and being present

https://herman.bearblog.dev/being-present/
262•articsputnik•18h ago•167 comments

JIT: So you want to be faster than an interpreter on modern CPUs

https://www.pinaraf.info/2025/10/jit-so-you-want-to-be-faster-than-an-interpreter-on-modern-cpus/
121•pinaraf•1d ago•25 comments

DDoS Botnet Aisuru Blankets US ISPs in Record DDoS

https://krebsonsecurity.com/2025/10/ddos-botnet-aisuru-blankets-us-isps-in-record-ddos/
120•JumpCrisscross•9h ago•94 comments

Strudel REPL – a music live coding environment living in the browser

https://strudel.cc
157•birdculture•14h ago•31 comments

A Draft of the ImageMagick Field Guide

https://joeldare.com/imagemagick-field-guide.html
3•codazoda•6d ago•1 comments

Why did containers happen?

https://buttondown.com/justincormack/archive/ignore-previous-directions-8-devopsdays/
119•todsacerdoti•21h ago•133 comments

Passt – Plug a Simple Socket Transport

https://passt.top/passt/about/
19•zdw•1w ago•2 comments

America's future could hinge on whether AI slightly disappoints

https://www.noahpinion.blog/p/americas-future-could-hinge-on-whether
131•jxmorris12•15h ago•119 comments

NVIDIA DGX Spark In-Depth Review: A New Standard for Local AI Inference

https://lmsys.org/blog/2025-10-13-nvidia-dgx-spark/
30•yvbbrjdr•7h ago•24 comments

Abstraction, not syntax

https://ruudvanasseldonk.com/2025/abstraction-not-syntax
93•unripe_syntax•1d ago•49 comments

JSON River – Parse JSON incrementally as it streams in

https://github.com/rictic/jsonriver
181•rickcarlino•5d ago•81 comments

A series of debugging sessions for Strimzi

https://github.com/fvaleri/strimzi-debugging
4•fvaleri•5d ago•0 comments

Software update bricks some Jeep 4xe hybrids over the weekend

https://arstechnica.com/cars/2025/10/software-update-bricks-some-jeep-4xe-hybrids-over-the-weekend/
384•gloxkiqcza•18h ago•261 comments