TGINSIGHT SIMILAR POSTS
Изворен канал @pythonotes · Post #32 · 7 фев.
Скорее всего уже слышали, что складывать строки через + это плохая практика. Падение производительности, и всё такое. Без лишних слов, давайте измерять: from timeit import timeit def t1(): # складываем 10 строк через + из переменной t = 'text' for _ in range(1000): s = t + t + t + t + t + t + t + t + t def t2(): # склеиваем список строк через метод join arr = ['text'] * 10 for _ in range(1000): s = ''.join(arr) def t3(): # складываем через + но не из переменной а непосредственно инлайн объекты for _ in range(1000): s = 'text' + 'text' + 'text' + ... # всего 10 раз Теперь каждую строку склейки запустим по 10М раз >>> timeit(t1, number=10000) 0.21951690399964718 >>> timeit(t2, number=10000) 1.4978306379998685 >>> timeit(t3, number=10000) 0.2213820789993406 Хм, а нам говорили что через "+" это плохо и медленно ))) 😁 Тут стоит учитывать, что речь идёт о склейке множества длинных строк. Давайте изменим условия: def t4(): t = 'text'*100 for _ in range(1000): s = t + t + t + t + t + t + t + t + t def t5(): arr = ['text'*100] * 10 for _ in range(1000): s = ''.join(arr) def t6(): for _ in range(1000): s = 'text'*100 + 'text'*100 + ... # всего 10 раз >>> timeit(t4, number=10000) 12.795130728000004 >>> timeit(t5, number=10000) 2.642637542999182 >>> timeit(t6, number=10000) 0.2184546610005782 Вот, уже другой разговор, сразу видна разница, в среднем в 6 раз. Но погодите, почему последний тест t6() по скорости такой же как и t3()? Ведь строки теперь в 100 раз длиннее! Это вопросы оптимизации кода, какие простые изменения ускоряют или замедляют выполнение программы. Мы столкнулись с примером обхода обращения к переменной. Например, именно так работает директива #define в С++, во время компиляции подставляя значение переменной вместо ссылки на неё. В Python это тоже работает, но часто ли вы сможете встретить такой способ работы со строками? К сожалению, способ почти только теоретический. В целом, тесты показали то, что мы хотели. Делаем выводы самостоятельно. Полный листинг 🌍 #tricks
Пребарај: #chromium
@linuxgram · Post #18454 · 16.04.2026 г., 03:35
📰 New AgingFly malware used in attacks on Ukraine govt, hospitals A new malware family named 'AgingFly' has been identified in attacks against local governments and hospitals that steal authentication data from Chromium-based browsers and WhatsApp messenger. 🔗 Source: https://www.bleepingcomputer.com/news/security/new-agingfly-malware-used-in-attacks-on-ukraine-govt-hospitals/ #chromium
Hashtags
@linuxgram · Post #17828 · 18.02.2026 г., 20:20
📰 Chromium on MediaTek: From testing to real-world performance on Genio 700 & 720 A deep dive on the current status of Chromium enablement on MediaTek Genio SoCs, including what the numbers look like when MediaTek’s hardware codecs are driven by Chromium’s V4L2 paths. 🔗 Source: https://www.collabora.com/news-and-blog/news-and-events/chromium-hardware-codecs-on-mediatek-genio-700-and-720-from-test-plans-to-real‑world-performance.html #chromium
Hashtags
@SolidotR · Post #4284 · 14.01.2026 г., 08:01
Chrome/Chromium 恢复支持 JPEG-XL 图像 #Chromium 2023 年 Google Chrome 移除了对实验性的 JPEG-XL 图像格式的支持。JPEG-XL 是免专利新的图像格式。Google 此举引发了很多争议，因为 Chrome/Chromium 占据了九成市场份额，它是 Web 标准事实上的仲裁者。到了 2025 年事情有了戏剧性转变。Google 改变了主意，开始恢复对 JPEG-XL 图像的支持，去年 12 月 Chrome/Chromium 代码库合并了 Rust 语言开发的 JPEG-XL 图像解码器 jxl-rs，本周基于 jxl-rs 的 JPEG-XL 图像解码功能默认启用。 https://www.phoronix.com/news/JPEG-XL-Returns-Chrome-Chromium https://github.com/chromium/chromium/commit/8215ebd5eb9d45b42bbc68e1ceff039a319b35d6
Hashtags
@anankkew · Post #2651 · 05.02.2021 г., 20:36
Chromium 重新设计代码大幅减少 DNS 流量 2021-02-05 23:24#Chromium 去年 8 月，亚太互联网络信息中心（APNIC）报告，Chromium 浏览器中检查网络是否存在 NXDOMAIN 拦截的代码会导致大量的垃圾 DNS 查询流量。NXDOMAIN 是域名错误信息，部分 ISP 会对其进行拦截重定向。Chromium 采用的方法是每次启动、每次 IP 地址变化、每次设备 DNS 配置变更时对 3 个随机的 10 个字符长的字符串进行 DNS 查询。APNIC 称 root 服务器一半的查询流量来自于 Chromium 的检查。这相当于每天在 root 服务器系统查询 600 亿次。APNIC 现在报告，Chromium 团队重新设计了代码停止了垃圾 DNS 查询，这一变动包含在 Chromium 87 中。在 Chromium 87 释出前，root 服务器的峰值查询流量高达每天 1430 亿次，释出后降至了每天 840 亿次，减少了 41%。
Hashtags
@fosspost · Post #621 · 28.01.2021 г., 15:38
Google is throwing #Chromium browser under the bus, as it is removing the Sync support from it and removing the API keys which it gave to Linux distributions. https://hackaday.com/2021/01/26/whats-the-deal-with-chromium-on-linux-google-at-odds-with-package-maintainers/
Hashtags
@linuxgram · Post #18611 · 29.04.2026 г., 10:27
📰Bork in Prague: SUSE's keynote gods demand their tribute Linux vendor touts European independence while rate limits, Chromium popups, and cold sparks steal the show BORK!BORK!BORK! The keynote gods are a fickle bunch, as SUSE discovered at its annual shindig in Prague. What should have been a slick edge demo instead served up error pages to unsuspecting attendees, while keynote presentations attracted some unwelcome visitors.… 🔗 Source: https://go.theregister.com/feed/www.theregister.com/2026/04/29/never_anger_the_keynote_demo/ #chromium#linux
@linuxgram · Post #18563 · 25.04.2026 г., 10:33
📰Raspberry Pi owners are missing this one free tweak that changes everything A couple of years ago, when I was working on my Raspberry Pi 5, I noticed that it was very slow. I googled possible reasons, and the main one was its lack of RAM. It has 4 gigs of RAM, but I noticed that running multiple Chromium tabs made it run at a snail's pace. So, I looked for ways to increase the RAM. Given that I was using an SD Card as a hard drive, using a swap file wasn't really an option. However, I found a program called ZRAM and... 🔗 Source: https://www.xda-developers.com/free-tweak-old-pi-changes-everything/ #chromium#raspberry
Hashtags
@linuxgram · Post #18429 · 14.04.2026 г., 14:14
📰 Latest Raspberry Pi OS Release Disables Passwordless sudo by Default Raspberry Pi OS 2026-04-13 is now available for download with a much-improved Control Center app, passwordless sudo disabled by default, Chromium enhancements, and many other changes. 🔗 Source: https://9to5linux.com/latest-raspberry-pi-os-release-disables-passwordless-sudo-by-default #chromium#raspberry
Hashtags
@linuxgram · Post #18428 · 14.04.2026 г., 12:46
📰 Latest Raspberry Pi OS Release Disables Passwordless sudo by Default Raspberry Pi OS 2026-04-13 is now available for download with a much-improved Control Center app, passwordless sudo disabled by default, Chromium enhancements, and many other changes. 🔗 Source: https://9to5linux.com/latest-raspberry-pi-os-release-disables-passwordless-sudo-by-default #chromium#raspberry
Hashtags
@sudo_recast · Post #814 · 10.01.2024 г., 05:51
現在 #Chromium (#Brave) 保存書籤的時候不可以點選「更多」來修改 URL 了。🥲 我一般就存個主頁，後面路徑和參數要刪掉。
@linuxgram · Post #18272 · 01.04.2026 г., 16:44
📰HarfBuzz 14.0 Released With New GPU Accelerated Text Rendering Library HarfBuzz is the open-source text shaping engine originally born out of the FreeType project and now widely-used by GNOME, KDE, Java, Flutter, Godot, Chromium, LibreOffice, and countless other applications. HarfBuzz 14.0 released today and making this release quite exciting is introducing a GPU-accelerated text rendering library... 🔗 Source: https://www.phoronix.com/news/HarfBuzz-14.0-Released #kde#opensource#chromium#gnome
Hashtags
@AiGenLabsStyles · Post #1575 · 06.09.2025 г., 07:12
⭐️ --sref 2843842182 --s (100, 333, 888) --v 7 #3D#Realistic#Dark#Minimalist#Detailed#Chromium#Surreal#StyleRandom#MidJourney#AiGenLabs#Ai 〰️〰️〰️〰️〰️ 🔥AiGenLabs - main channel