Godot 4.0 gets SDF based real-time global illumination
godotengine.org — As work progresses on Godot 4.0 at a steady pace, a new and novel method of creating full-scene global illumination has been added in the master branch. SDF , 1
Speeding up function calls with just one line in Python
hackeregg.github.io — One line summary: Use lru_cache decorator SPEEDING , 2
Was Acorn's RISC OS an under-appreciated pearl of OS design?
livejournal.com — I was a huge Archimedes fan and still have an A310, an A5000, a RiscPC and a RasPi running RISC OS. UNDER-APPRECIATED , 3
Foam – A Roam Research alternative with VSCode, Markdown and GitHub
github.com — A personal knowledge management and sharing system for VSCode ROAM , 4
Show HN: Promnesia – an attempt to fix broken web history
beepb00p.xyz — Promnesia is a browser extension (Chrome/Firefox/Firefox mobile) that serves as a web surfing copilot by enhancing your browsing history, improving your web exploration experience, and integrating with your knowledge base. PROMNESIA , 5
The chicken first crossed the road in Southeast Asia, landmark gene study finds
sciencemag.org — The red jungle fowl's exotic plumage—and fierce fights among cocks—may have helped make the bird attractive to the early farmers who domesticated it. CHICKEN , 6
Chromium and Mozilla to enforce 1yr validity for TLS certificates
googlesource.com — Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all users to experience the web. CHROMIUM , 7
The True Story of Kudzu: The Vine That Never Ate the South
smithsonianmag.com — As a young naturalist growing up in the Deep South, I feared kudzu. I’d walk an extra mile to avoid patches of it and the writhing knots of snakes that everyone said were breeding within. Though fascinated by the grape-scented flowers and the purple honey produced by visiting bees, I trembled at the monstrous green forms climbing telephone poles and trees on the edges of our roads and towns. KUDZU , 8
Ask HN: Is Edge any better or worse than Chrome on privacy?
news.ycombinator.com — I primarily use Firefox, but occasionally I have to resort to Chrome for certain poorly-designed websites. EDGE , 9
Werner Herzog: ‘Film-making is always some sort of risk-taking’
ft.com — Then $67.00 per month.New customers onlyCancel anytime during your trial WERNER , 10
Guide to Linux System Calls (2016)
packagecloud.io — This blog post explains how Linux programs call functions in the Linux kernel.It will outline several different methods of making systems calls, how to handcraft your own assembly to make system calls (examples included), kernel entry points into system calls, kernel exit points from system calls, glibc wrappers, bugs, and much, much more. Create a package repository in less than 10 seconds, free. Sign up! TL;DRWhat is a system call?Prerequisite informationHardware and softwareUser programs, the kernel, and CPU privilege levelsInterruptsModel Specific Registers (MSRs)Calling system calls with assembly is a bad ideaLegacy system callsUsing legacy system calls with your own assemblyKernel-side: int $0x80 entry pointReturning from a legacy system call with iretFast system calls32-bit fast s... CALLS , 11
Losing the Narrative: The Genre Fiction of the Professional Class
americanaffairsjournal.org — Something strange happened to the news over the past four years. The dominant stories all resembled the scripts of bad movies—sequels and reboots. The Kavanaugh hearings were a sequel to the Clarence Thomas hearings, and Russian collusion was rebooted as Ukrainian impeachment. Journalists are supposed to hunt for good scoops, but in January, as the coronavirus spread, they focused on the impeachment reality show instead of a real story. GENRE , 12
The World Doesn’t Need a New Gigantic Particle Collider
scientificamerican.com — This is not the right time for a bigger particle accelerator. But CERN, the European physics center based in Geneva, Switzerland, has plans—big plans. The biggest particle physics facility of the world, currently running the biggest particle collider in the world, has announced it aims to build an even bigger machine, as revealed in a press conference and release today. GIGANTIC , 13
Comedy of Heirs: Catching a glimpse of heaven in the confines of Tristram Shandy
bookforum.com — TRISTRAM SHANDY sailed into eighteenth-century literary history alongside such bawdy picaresques as Tom Jones. But unlike the rest Laurence Sterne’s creation is an antinovel: It starts and stops, has entire pages that aren’t even text—blank or solid black or marbled or filled with lines and swirls that indicate the wayward shapes of the narrative (at such moments it seems like what Sterne really is is a concrete poet). On the occasions when the author doesn’t want you to know what naughty thing he’s saying (though he quit being a minister to write, Sterne was still a modest man) there are heaving piles of asterisks. By such means—explained in an insanely arch but persistently conversational manner—you get that the book in your hands is alive and it will turn any whimsical damn way he wants... COMEDY , 14
Every character has a story: U+213a (rotated Q) (2005)
archive.org — This article will be the first in an occasional recurring series of articles that point out little-known historical character stories in Unicode. CHARACTER , 15
Wanted: Console Text Editor for Windows
virtuallyfun.com — (This is a guest post by Antoni Sawicki aka Tenox) WANTED , 16
Building a high performance JSON parser
cheney.net — JSON is important, damn near everything that we do as programmers or operators involves JSON at some point. JSON decoding is expensive, if your product talks JSON then performance of marshalling data in and out of JSON is important. This is a talk about designing an efficient replacement for encoding/json.Decoder. PARSER , 17
Lemmy, an open-source federated Reddit alternative, gets funding for development
lemmy.ml — JavaScript is required for this page. LEMMY , 18
Astronomers detect regular rhythm of radio waves, with origins unknown
mit.edu — A team of astronomers, including researchers at MIT, has picked up on a curious, repeating rhythm of fast radio bursts emanating from an unknown source outside our galaxy, 500 million light years away. REGULAR , 19
How we got our AWS bill to around 2% of revenue
sankalpjonna.com — Server cost is usually not a concern for most funded startups, but for a boot strapped SaaS product like ours, it was important to have an AWS bill that is easy on the pocket and a little more proportional to the MRR. REVENUE , 20
Wirecard is 'beyond salvageable,' according to analyst
businessinsider.com — German fintech group Wirecard became one of the hottest European stocks while battling endless allegations of fraud. SALVAGEABLE , 21
Alpha Waves was the first 3D platform game
fosdem.org — Alpha Waves is the first 3D platform game ever, according to the Guiness Book of Records. WAVES , 22
WebTransport API
wicg.github.io — This section is non-normative. WEBTRANSPORT , 23
The Internet is too unsafe: We need more hackers
medium.com — A while ago I stumbled upon a vulnerability on a website with millions of users. UNSAFE , 24
Show HN: A Reddit reader that looks like the frontpage of a print newspaper
unim.press — Please enable JavaScript to load new stories. READER , 25
Adventures in booting Linux on Raspberry Pi 4
mostlypointless.dev — Almost two months ago, I started building a four node Raspberry Pi 4 cluster for a project I’m working on. Figuring out the best way to get Linux on each node lead me down a rabbit hole and I spent the next four weeks yak shaving. ADVENTURES , 26
Secretive – macOS native app to store SSH keys in the Secure Enclave
github.com — Store SSH keys in the Secure Enclave SECRETIVE , 27
How Does Sqlite Work? (2014)
jvns.ca — This evening the fantastic Kamal and I sat down to learn a little more about databases than we did before. SQLITE , 28
Xi-Editor Retrospective
raphlinus.github.io — A bit more than four years ago I started the xi-editor project. Now I have placed it on the back burner (though there is still some activity from the open source community). XI-EDITOR , 29
Crispr gene editing in human embryos wreaks chromosomal mayhem
nature.com — Editing of human embryos is controversial.Credit: Pascal Goetgheluck/Science Photo Library CHROMOSOMAL , 30
Volley (YC W18) is hiring a Head of Engineering to build voice-controlled games lever.co
Flexport is hiring engineers in Amsterdam (we’ll get you a visa) flexport.com
Guilded (YC S17) is hiring engineers to connect gaming communities (remote) guilded.gg
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凸优化
Stephen Boyd、Lieven Vandenberghe / 王书宁、许鋆、黄晓霖 / 清华大学出版社 / 2013-1 / 99.00元
《信息技术和电气工程学科国际知名教材中译本系列:凸优化》内容非常丰富。理论部分由4章构成，不仅涵盖了凸优化的所有基本概念和主要结果，还详细介绍了几类基本的凸优化问题以及将特殊的优化问题表述为凸优化问题的变换方法，这些内容对灵活运用凸优化知识解决实际问题非常有用。应用部分由3章构成，分别介绍凸优化在解决逼近与拟合、统计估计和几何关系分析这三类实际问题中的应用。算法部分也由3章构成，依次介绍求解无约束......一起来看看 《凸优化》 这本书的介绍吧!
