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Изворен канал @pythonotes · Post #32 · 7 фев.

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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

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#define#tricks
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Libreware

@libreware · Post #1232 · 22.02.2024 г., 11:58

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Quiet Encrypted p2p team chat with no servers, just Tor. https://tryquiet.org/index.html https://github.com/TryQuiet/quiet Currently in developpement stage so be cautious of your data Quiet is an alternative to team chat apps like Slack, Discord, and Element that does not require trusting a central server or running one's own. In Quiet, all data syncs directly between a team's devices over Tor with no server required. No email or phone number required, Unlike #Slack, #Discord, #WhatsApp, #Telegram, and #Signal, no email or phone number is required to create or join a #community. End-to-end encryption, All data is #encrypted end-to-end between member devices, using Tor. Channels, Organize chats in Slack-like channels, so conversations don't get messy. Images, Send and receive images, with copy/paste, drag & drop, and image previews. Files, Send and receive files of unlimited size! Notifications, Invite links, Keyboard controls, Desktop apps Android, Quiet works on Android, and F-Droid support is on the way. #E2E#Chat#Quiet#Tor

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#slack#discord#whatsapp#telegram#signal#community#encrypted#e2e#chat#quiet#tor
Libreware

@libreware · Post #1475 · 21.07.2025 г., 16:42

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#TBOT Show 7: The Significance of Dorsey’s Bitchat, Worlds First eSIM Hack, Mexico’s Digital ID, New Show Source Insights Took a week off and now I’m back. 😎 (with a new addition to the show?!) (also - big sorry for the show being 40 minutes) WATCH THE SHOW ON SUBSTACK https://odysee.com/@takebackourtech:f/tbot-show-7:6 Here’s the stories for the week: Jack #Dorsey’s #Bitchat - The Real Story: The tech mogul Jack Dorsey released a censorship proof messaging app in late June - named Bitchat. It runs a #bluetooth#mesh network, end to end #e2e#encryption, and rolling IDs and is picking up traction. I share my thoughts on the app, and concerns I have - but that’s not even the real story. I think Jack has a bigger message than just the app. World’s First #eSIM Hack: A security lab out of Poland just demonstrated a hack on one of the largest SIM providers for IoT devices. We’ll get techy in our understanding and ask the question, could this impact our phones? #DigitalID, Coming Soon To #Mexico: The Mexican government has signed a new #Biometric#ID law, known as the CURP. How is this enforced and what does it mean for Mexican residents? Find out today. Decentralized #Video Conferencing: Recently I’ve been relying more on video conferences instead of calling people, especially while traveling. Good thing I’ve got the #Jitsi app, I’ll show you my setup! #videocall New Show, “Source Insights”: You follow #TBOT to stay informed on tech freedom. Now go deeper with a new weekly show “Source Insights”, where Hakeem shares his tools, lifestyle and productivity tips, entrepreneurial advice, wisdom from guides, and personal experiences. Go deeper, join me as a Source Seeker. Unlock access with a paid subscription. UNLOCK ACCESS 🪄 We aim for our show to be well-researched, well-informed and focused on the most impactful stories ⭐️ PLUS - Each story comes with recommendations and there’s one cool tech trick or open-source solution every week. We’ll be publishing full posts and clips of each of these stories soon. Share this post with your crew. 🚢 👩‍💻Get private phones, laptops, and tablets 📲SIM Swap Survival Guide Webinar

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#tbot#dorsey#bitchat#bluetooth#mesh#e2e#encryption#esim#digitalid#mexico#biometric#id#video#jitsi#videocall