Server-Sent Events (SSE) is simpler and more efficient for one-way, real-time data transmission from server to client, making it ideal for scenarios like news updates, stock market data, and task progress monitoring. Unlike WebSockets, SSE maintains an open HTTP connection, leveraging existing HTTP infrastructure and consuming fewer resources.
Egui is unique because it uses an immediate mode GUI approach, where the interface is created and rendered on each application draw cycle. This contrasts with traditional retained mode GUIs, offering faster prototyping with minimal boilerplate code. However, it faces challenges like limited layout control and long edit-compile-run cycles in Rust.
Egui faces challenges such as long edit-compile-run cycles in Rust, limited flexibility in layout management, and difficulties in rendering fonts on high-pixel-density devices due to browser API limitations. Additionally, debugging interfaces in web browsers remains a significant hurdle for developers.
Sherlock allows users to track social media accounts across over 400 platforms by searching for a username. It helps users identify if their accounts are easily traceable and raises awareness about the importance of unique usernames. However, it has been criticized for generating false positives and having a confusing interface.
F* bridges the gap between formal proof and practical programming by combining functional programming with expressive dependent types and automated SMT solving. It enables developers to verify aspects like memory safety, thread safety, and algorithm complexity, making it a powerful tool for high-assurance software development.
Preliminary investigations suggest the Azerbaijani airliner was accidentally hit by a Russian anti-aircraft missile near Grozny, causing the crash. Survivors reported hearing an explosion and seeing damage consistent with shrapnel impact. This incident echoes the 2014 MH17 tragedy, raising concerns about civilian flight safety in conflict zones.
Unix time assumes each day is exactly 86,400 seconds, ignoring leap seconds added to account for Earth's variable rotation speed. This leads to discrepancies between Unix time and real-world time, causing potential issues in time-sensitive systems and requiring careful handling in software to avoid errors.
The Differential Growth plugin for Blender allows users to create complex, natural-looking 3D shapes by simulating organic growth processes. It is free, open-source, and highly customizable, enabling artists to generate intricate designs with minimal effort, making it a popular tool for generative art.
An outbreak of bird flu led to the death of more than half the big cats at a Washington sanctuary, including African servals, lynxes, and cougars. The sanctuary has been closed for disinfection and is working with animal health experts to prevent further spread of the disease.
Global warming has caused 77% of the Earth's land to become drier and more saline over the past 30 years. This trend, driven by climate change, is redefining life on Earth, with arid regions now covering over 40% of the land, excluding Antarctica, and posing significant challenges to agriculture and ecosystems.
在当今信息爆炸的时代,研究者们常常希望能快速找到相关的学术论文。一位热情的开发者 Quizzical4230 打造了一个新网站,它通过语义搜索来帮助用户轻松检索 ArXiv 的论文。许多用户对该工具的语义搜索能力表示赞赏,并希望该工具能够进一步显示论文的引用和审稿信息。
原文链接:Show HN: I made a website to semantically search ArXiv papers)
Egui 是一个用 Rust 编写的即时模式 GUI ,它因其简便易用和高效编译而受到一些开发者的热爱。然而,评论者指出, Rust 的编辑-编译-运行周期对某些开发者来说过于冗长,这影响了快速迭代的可能性。对于界面布局的控制,虽然容易上手,但缺乏灵活的比例调整也是一个需要克服的挑战。了解更多)
评论中,有开发者提到在高像素密度设备上,画布UI框架会在渲染字体时受到浏览器 API 的限制。此外,如何在 web 浏览器中调试这些界面,同样是 Rust GUI 使用中的一个不容忽视的问题。
Server-Sent Events (SSE) 是一种被许多开发者低估的技术,其简单性和高效性常常被 WebSockets 的复杂功能所掩盖。相比于 WebSockets,SSE 能够更方便地实现服务器到客户端的单向实时数据传输,非常适合用于实时新闻推送、股票行情更新等场景。虽然面对一定的浏览器连接限制和协议的不完善之处,SSE 依然凭借其广泛的兼容性和低资源消耗,成为这些特定应用的理想选择。评论区中有关于 Mercer 多个实例的实践分享和使用经验,进一步说明该技术在真实应用中的价值。
原文链接:Server-Sent Events (SSE) Are Underrated)
Sherlock 是一个能够帮助用户通过用户名在超过 400 个社交网络上追踪社交媒体账号的工具。这一项目在 Hacker News 上收到了热烈讨论,评分高达 231 分。评论中有人提到,这样的工具使得各种账户的追踪变得更加困难;也有用户提出,对于那些希望分别保持职业和匿名社交存在的人而言,这样的工具尤为有用。不过,也有用户反映该工具存在误报问题,比如,在查询不存在的用户名时,Sherlock 仍然返回了一些结果。您可以通过 Sherlock) 一探究竟。
F* 是一种通用的证明导向编程语言,以其在正式证明和实际编程之间架起桥梁的能力而备受关注。注重实用性的 F* 不仅支持功能性编程,还支持富有表现力的依赖类型,并自动进行 SMT 求解与策略交互式定理证明。许多评论者认为,F* 为编程语言的未来发展指明了方向,尤其是在程序验证和安全性方面。想象一下,如果我们能够自动验证程序的内存安全性或算法复杂性,这将极大地提升编程质量与效率。
原文链接 F*: A proof oriented general purpose programming language)
阿塞拜疆航空公司的一架客机在哈萨克斯坦的阿克套市附近坠毁,初步调查指出俄罗斯的防空导弹可能是这场悲剧的幕后黑手。该事件与2014年俄支持的武装在顿巴斯地区击落MH17航班的事件相呼应。生还者报告称飞机在俄国格罗兹尼市附近发生爆炸,并怀疑外部爆炸造成机体受损。目前,有上升的死亡人数及社交媒体视频支持这一推论,而阿塞拜疆总统也呼吁展开刑事调查。
原文链接:Air missile accident emerges as probable cause of Azerbaijan E190tragedy)
Unix 时间,也被称为 POSIX 时间,是现代计算系统中常用的一种时间表示方式。虽然我们常认为它简单明了,但在更深入的探讨中会发现,这一时间表示并不如想象中精准。博主 zdw 的文章详细解释了 Unix 时间的偏差原因,尤其是涉及到闰秒和时间同步的问题。众多评论者分享了他们各自对时间管理的经验与见解,例如如何处理 Epoch 时间无效的问题,以及在数据库中存储时间的最佳实践。深入阅读让我们了解到时间协调的复杂性及其对分布式系统事件同步的重要性。
原文链接:Seconds Since the Epoch)
Blender 的差分生长插件正在引领生成艺术的新潮流。此插件完全符合 Blender 的开源精神,免费供用户使用,并以生成自然形态的独特能力吸引了众多用户的关注。利用它,设计者可以轻松生成复杂且自然的形态,从而激发无限创作灵感。社区成员不断探讨例如插件在几何节点中的应用及其与其他软件的对比,增强了用户彼此之间的知识交流和分享。
原文链接:Differential Growth Addon for Blender)
在华盛顿的一处大型猫科动物保护区中,禽流感爆发,导致超过一半的动物,包括非洲薮猫、猞猁和美洲狮等在内的20只大型猫科动物死亡。这场悲剧引发了公众对野生动物卫生和动物保护区安全措施的广泛关注。保护区已关闭并隔离以防止进一步的传播,目前正与动物健康专家合作进行消毒和防范措施。
原文链接:Bird flu kills more than half the big cats at a Washington sanctuary)
随着气候变化加剧,地球上 75% 的土地变得更加干燥和咸化,这一趋势对全球 80 亿人口的生存和农业生产构成了巨大挑战。根据联合国防治荒漠化公约和联合国粮食及农业组织的最新研究,这一变化已成为永久性的结果,严重影响生态系统健康及粮食和水的安全性。
原文链接:Three-quarters of the land is drying out, 'redefining life on Earth')