40 篇热帖
2025年5月30日，美国国税局已将其直接报税软件（Direct File）的大部分代码作为开源软件发布在GitHub上。该项目属于美国政府作品，已进入公共领域。
此举表明国税局正履行《共享信息技术法案》下的义务，且比原计划提前三周完成。国税局团队此前曾解释，开源发布是为了通过接受独立审查来建立公众信任，展示其确保纳税人获得所有应享税收优惠的承诺。
通过构建最准确的报税选项、保障可及性与数据安全，以及现在公开共享代码，直接报税团队体现了获取纳税人信任的持续努力。
注：作者已离职国税局，本文仅代表其个人观点。
根据法庭命令，OpenAI现在开始保留所有ChatGPT用户的对话日志。这一变化意味着，无论是用户主动删除的对话，还是涉及敏感信息的对话，都将被记录和存储。
据9to5Mac的独家报道，苹果正在开发为Apple Notes添加Markdown导出功能。该功能预计将在下周的WWDC上公布。
报道强调，这是一个导出功能，而非将Apple Notes转变为像Bear或Obsidian那样的Markdown编辑器。用户仍然在Notes的富文本界面中编辑，但可以将内容导出为Markdown格式。
作者借机批评了Apple Notes使用**#标签**的做法。他认为这不如Finder中真正的、可分词的标签系统（支持空格和大写），并认为带#前缀的标签显得“丑陋且极客化”。
A proposal to restrict sites from accessing a users' local network without permission - WICG/local-network-access
A Profile of Curtis Yarvin, the right-wing thinker behind the Substack “Gray Mirror,” who has been embraced by J. D. Vance, Marc Andreessen, Peter Thiel, and other supporters of Donald Trump. Ava Kofman reports.
Benchmarks & Tips for Big Data, Hadoop, AWS, Google Cloud, PostgreSQL, Spark, Python & More...
Startups are deploying employee tracking tools in low-regulation markets with help from Silicon Valley venture capital.
A week ago, I knew absolutely nothing about Swift. Today, I have a working iOS app sitting on my Mac and my test device
Try the Air Lab firmware in your browser — simulate environments, explore sensors, and download sample data without hardware.
Mac fan paid $900 to color-match iconic Apple beige-gray "Platinum" plastic for everyone.
Apple's Notes app is rumored to be getting limited Markdown support in iOS 26 and macOS 26, according to 9to5Mac. The feature would allow users to export text in the markdown format. Markdown is a lightweight markup language that some writers prefer to use over rich text. Rather than using HTML for bold, italics, links, and headers, Markdown uses quick character shortcuts like bold or #header.
How can you make affine transformations (the only ones SVGs are capable of) resemble perspective transformations?
美国曾被视为全球金融体系中最可靠的国家，美国国债长期被投资者视为终极安全资产。然而，当前情况正在发生变化。市场开始对美国的信用可靠性产生怀疑，这体现在利率上升与美元走弱同时出现的反常现象——这种模式通常只在新兴市场的信心危机中出现。
这种转变的核心原因并非美国的债务规模，而是其政治过程的严肃性受到质疑。当前政策制定过程表现出缺乏规划、反复无常和极度不专业的特点。例如：
文章援引历史数据指出，美元与利率之间的传统关系已被打破，并以墨西哥“龙舌兰危机”期间的类似市场反应作为类比。作者认为，国际投资者目前或许仍在犹豫，但美国这种“不严肃”的国家治理模式最终可能导致资本外流的“残酷觉醒”。财政部长关于美国“永不违约”的声明，恰恰反映了需要为此辩护的困境本身。
A Spiral Structure in the Inner Oort Cloud, Nesvorný, David, Dones, Luke, Vokrouhlický, David, Levison, Hal F., Beaugé, Cristian, Faherty, Jacqueline, Emmart, Carter, Parker, Jon P.
An excerpt of “The Aviator and the Showman,” a new book by Laurie Gwen Shapiro about the marriage between Amelia Earhart and George Palmer Putnam and her attempt to fly around the world with Fred Noonan.
Reviewing the few changes in the Claude 4.0 system prompts, we get a sense for how system prompts program chatbot applications.
Swift is a general-purpose programming language built using a modern approach to safety, performance, and software design patterns.
How we handle 92 million compilations a year without everything catching fire
二战期间，为突破纳粹德国为抵御盟军登陆而修建的“大西洋壁垒”，盟军工程师内维尔·舒特·挪威及其团队提出了一项名为“Panjandrum”的非传统武器构想。该构想源于为克服迪耶普突袭等行动中暴露的港口防御难题，旨在将一吨炸药精准投送至坚固的混凝土海墙并将其炸开。
其设计灵感来自烟花“凯瑟琳轮”，最终形态是一个巨大的、类似电影卷轴的装置，由两个直径约3米的轮子、中心的炸药钢罐及环绕轮子的火箭推进器组成，计划通过遥控火箭点火驱动，以超过每小时60英里的速度冲上沙滩，撞击障碍与墙体。
然而，多次测试均告失败。1943年至1944年初进行的测试中，火箭脱落导致装置失控，甚至发生冲向围观人群和摄影师的惊险场面。最终，在D日前五个月，该项目因无法在短期内改进以满足实战要求而被废弃。
尽管Panjandrum本身失败，但其“无人遥控运送巨量炸药”的概念在某种程度上预见了现代无人机战争。与此同时，盟军在D日实际使用了其他改装坦克等非传统武器（称“趣味”）成功突破了防线。
战后，部分非军事人士曾尝试重建小型化Panjandrum，例如2009年为节日制作的版本在安全性与可控性上有所改善，但原型固有的稳定性难题依然存在。此外，亦有观点认为Panjandrum的公开测试本身可能就是一项旨在迷惑德军的情报行动。
Back when RAM was precious, clever code reigned. Take a peek into early computer vision's elegant solutions.
I wrote my first line of Rust in June 2015, a month after Rust 1.0 landed. Coming from C, Python, and JavaScript, I never looked back. Two Rust-based startups and 500k lines of Rust later, here are some reflections on the milestone.
🐦 Bringing animated parrots to terminals everywhere - hugomd/parrot.live
Payphones "were the only things that were built to last for decades and be out in the elements," says electrical engineer Patrick Schlott. He should know; as a hobby, he buys secondhand payphones, rewires them, then asks local businesses in rural Vermont if they'd let him install them. His goal
Abstract page for arXiv paper 2505.17117: From Tokens to Thoughts: How LLMs and Humans Trade Compression for Meaning
Startup Equity 101 I am writing this essay because I believe that money is both useful and worth thinking as little as possible about. No one I know joins a...
Adam is an AI CAD agent that helps mechanical engineers build hardware faster in their favourite platforms.
A major hurdle to curing HIV is the persistence of integrated proviruses in resting CD4+ T cells that remain in a transcriptionally silent, latent state. One strategy to eradicate latent HIV is to activate viral transcription, followed by elimination of infected cells through virus-mediated cytotoxicity or immune-mediated clearance. We hypothesised that mRNA-lipid nanoparticle (LNP) technology would provide an opportunity to deliver mRNA encoding proteins able to reverse HIV latency in resting CD4+ T cells. Here we develop an LNP formulation (LNP X) with unprecedented potency to deliver mRNA to hard-to-transfect resting CD4+ T cells in the absence of cellular toxicity or activation. Encapsulating an mRNA encoding the HIV Tat protein, an activator of HIV transcription, LNP X enhances HIV transcription in ex vivo CD4+ T cells from people living with HIV. LNP X further enables the delivery of clustered regularly interspaced short palindromic repeats (CRISPR) activation machinery to modulate both viral and host gene transcription. These findings offer potential for the development of a range of nucleic acid-based T cell therapeutics. Resting T cells are difficult to manipulate, and are a reservoir for latent HIV. Here, the authors develop a lipid nanoparticle formulation with the ability to transfect resting primary human T cells, enabling delivery of mRNAs that result in reactivation of latent HIV. This could help development of HIV cure strategies.
AdaCore 与 NVIDIA 合作，将 Ada 和 SPARK 编程语言引入汽车市场，以支持 ISO-26262 标准下的软件开发。NVIDIA 开发了 Drive® OS，这是一个专为自动驾驶应用设计的参考操作系统和软件栈，运行于 DRIVE AGX 硬件上。该系统的部分关键组件符合 ISO-26262 的最高完整性级别，NVIDIA 选择了 Ada 和 SPARK 来开发这些组件，充分利用其形式化方法和其他安全特性。两家公司已发布一个开源的参考流程，允许行业自由采用或定制该流程。AdaCore 首席产品和收入官 Quentin Ochem 强调，随着汽车行业从机械特性转向软件特性，实现最高级别的软件安全至关重要，NVIDIA 展示了技术领导力。参考流程可在 https://nvidia.github.io/spark-process/ 或 https://github.com/NVIDIA/spark-process 免费获取。
Titanium is the ninth most abundant element in the Earth's crust, yet products based on pure titanium are uncommon because it's expensive to remove the oxygen from titanium ore. Reducing costs would encourage manufacturers to take advantage of the highly useful properties of titanium in their products.
Phptop 是一款简单的PHP资源分析器，专为生产环境设计，安全可靠。它由Bearstech开发并维护，自2009年至2024年持续使用。
time 命令的指标，包括墙钟时间（wallclock）、用户CPU时间（User）、系统CPU时间（Sys）以及内存使用情况。auto_prepend_file=/path/to/phptop_hook.php），然后重新加载Web服务器（如Apache或PHP-FPM）即可全局激活。auto_prepend_file 指向phptop_hook.php文件。phptop 命令（例如 phptop -s mem 按内存排序查看输出）。输出示例展示了多个URL的性能数据，例如：