@TestFlightX · Post #35105 · 03.04.2026 г., 03:06
#Snapchat https://testflight.apple.com/join/p7hGbZUR
Hashtags
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: #snapchat
@TestFlightX · Post #35105 · 03.04.2026 г., 03:06
#Snapchat https://testflight.apple.com/join/p7hGbZUR
Hashtags
@TestFlightX · Post #34676 · 20.11.2024 г., 02:14
#Snapchat https://testflight.apple.com/join/p7hGbZUR
Hashtags
@TestFlightX · Post #34401 · 30.10.2024 г., 08:43
#SNAPCHAT https://testflight.apple.com/join/p7hGbZUR
Hashtags
@perspectiveix · Post #1641 · 06.11.2018 г., 10:00
💸SnapAds are the Primary Ad Spend on Snapchat #Snapchat advertising spend by national marketers was projected to have increased by 10% in Q3 and by 8% through the first 9 months of the year, according to recent figures from Standard Media Index, which sources its data directly from the invoices of 5 of the 7 major media holding companies and leading independent agencies. Snapchat’s advertising business has been growing slower than expected. Well, at least according to eMarketer, which recently drastically cut its forecast for the platform’s ad revenues. 🚀@PerspectiveIX via MarketingCharts. 👻 Join us on Snapchat! ❓Do you use Snapchat?
Hashtags
@perspectiveix · Post #1521 · 05.09.2018 г., 08:00
👻Snap Across the Map According to Snap, on average, 188 million people around the world use #Snapchat on a daily basis, and these daily active Snapchatters use the app at an average of over 20 times per day. As of August 2018, these are the number of users Snapchat can reach in different regions/countries: - 93 million in the 🇺🇸 & 🇨🇦 - 76 million in Europe (17.5m in 🇫🇷, 15.5m in 🇬🇧, 9.2m in 🇩🇪) - 21 million in MENA (13.1m in 🇸🇦, 2.6m in 🇮🇶, 1.8m in 🇦🇪) - 13 million in Latin America - 6.5 million in 🇮🇳 - 6 million in 🇦🇺 🚀@PerspectiveIX via Snap. ❓Do you use Snapchat?
Hashtags
@perspectiveix · Post #1506 · 29.08.2018 г., 08:00
👻Snapchat's Growth In their Q2 2018 earnings report, Snap, #Snapchat's parent company, reported beating revenue expectations by 5%, but user growth, after slowing considerably for two years, went in the opposite direction. Snap’s Daily Active Users were (DAUs) still up 9% YoY, but for the first time declined sequentially by 2%. 🚀@PerspectiveIX Read more about Snap's growth excuses at Stratechery.
Hashtags
@perspectiveix · Post #1444 · 07.08.2018 г., 18:30
👻Has Snapchat already stopped growing? Snap reports its Q2 results today after the market close. And the consensus from analysts is that Snap’s audience will grow by just 1 million daily active users, according to FactSet. That’s surprising, considering that #Snapchat added 21 million new users in the same period two years ago. 🚀@PerspectiveIX 📖 via Recode: prs.pctvix.co/2Mqa5mZ
Hashtags
@perspectiveix · Post #1291 · 23.05.2018 г., 19:30
👻Want More Followers on Snapchat? Getting discovered on #Snapchat is not the easiest thing, so we thought we share what we’ve learned so far: https://prs.pctvix.co/2IdOu23 🚀@PerspectiveIX
Hashtags
@perspectiveix · Post #1245 · 04.05.2018 г., 15:01
👻Snapchat Getting discovered on #Snapchat is not the easiest thing, so we thought we share what we’ve learned so far: https://prs.pctvix.co/2IdOu23
Hashtags
@perspectiveix · Post #1210 · 18.04.2018 г., 23:05
🤠For Snapchat Fans Out There We're making a few #Snapchat Lenses (aka face filters). Already made these caps: ❤️ Manchester United: https://prs.pctvix.co/2qF9yDY 💚 New York Jets: https://prs.pctvix.co/2HaW5uD 🦄 Unicorn: https://prs.pctvix.co/2F01RgC If you want a cap for the team you support, message @iXContactBot with the NAME, COUNTRY, and SPORT your team plays. We will randomly select 3 of them and make you a cap! You have 24 hours. Good luck 🙂 🚀@PerspectiveIX 👻 Add us on Snapchat: http://prs.pctvix.co/SnapchatIX
Hashtags
@perspectiveix · Post #1144 · 11.03.2018 г., 20:30
👻#Snapchat users are young, American, and Snap a lot! 🚀@PerspectiveIX 👻 Add us on Snapchat: http://prs.pctvix.co/SnapchatIX Do you you use Snapchat? 👍🏻 Yes 👎🏻 No
Hashtags
@perspectiveix · Post #1136 · 06.03.2018 г., 18:30
👻#Snapchat Guide for Beginners: Friends Screen: http://prs.pctvix.co/2EYWjEN
Hashtags