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: #handhygiene
@ncdcgov · Post #3857 · 05.06.2023 г., 09:02
Business owners and facility managers should promote #HandHygiene at all times. Provide adequate hand hygiene supplies such as running water, soap & hand sanitiser in all shared spaces. Clean hands save lives
Hashtags
@ncdcgov · Post #4164 · 17.01.2024 г., 08:17
Improving the quality and safety of health care through informed #IPC practices such as #HandHygiene bolsters the feeling of protection by patients & healthcare workers. Facility managers should ensure #handhygiene at every point of care is promoted at all times.
Hashtags
@ncdcgov · Post #4457 · 27.03.2025 г., 11:13
🧼 Keep Your Hands Clean, Stay Healthy! 👐🏽 Washing your hands at the right moments helps prevent the spread of germs and diseases. Don’t forget to wash your hands: ✅ After coughing/sneezing ✅ After touching high-contact surfaces ✅ Before touching a mask ✅ When entering/leaving public spaces ✅ Upon returning home ✅ While caring for the ill Clean hands save lives! 🙌🏽#HandHygiene#StaySafe#NCDCNigeria
@ncdcgov · Post #4600 · 16.02.2026 г., 10:21
Every day, our hands come in contact with germs from surfaces, people, and objects around us. Without proper hygiene, these germs easily enter the body and cause illness. Washing your hands with soap under clean running water for at least 20 seconds especially before eating, after using the toilet, and after touching shared surfaces is one of the most effective ways to prevent infections. ✅Make handwashing a habit, protect yourself and those around you. Clean hands today, healthier tomorrow. #HealthTipMonday#HandHygiene#NCDCNigeria
@ncdcgov · Post #4581 · 20.01.2026 г., 08:18
Clean hands save lives. Wash your hands regularly with soap under clean running water to protect yourself and others from infections. 🧼👐 #LassaFever#NCDCNigeria#HandHygiene#StaySafe
@ncdcgov · Post #4000 · 22.09.2023 г., 08:41
Preventing #LassaFever starts with simple habits! Remember: 20 seconds of regular handwashing with soap and water can save lives🧼 Let's keep our hands clean and our loved ones safe. #STOPLassaFever#HandHygiene
@ncdcgov · Post #4402 · 08.10.2024 г., 10:52
#HandHygiene with clean, running water is very vital to the prevention of #cholera. Important #handwashing moments⬇️ ✅While caring for the ill ✅After using the toilet ✅Before food preparation ✅Before and after eating ✅After touching high contact surfaces #TakeResponsibility
@ncdcgov · Post #4329 · 13.07.2024 г., 09:33
#HandHygiene with soap under clean, running water is very vital to the prevention of #cholera. Important #handwashing moments⬇️ ✅While caring for the ill ✅After using the toilet ✅Before food preparation ✅Before and after eating ✅After touching high contact surfaces #TakeResponsibility
@ncdcgov · Post #4312 · 20.06.2024 г., 08:52
#HandHygiene with clean, running water is very vital to the prevention of #cholera. Important #handwashing moments⬇️ ✅While caring for the ill ✅After using the toilet ✅Before food preparation ✅Before and after eating ✅After touching high contact surfaces #TakeResponsibility
@ncdcgov · Post #4558 · 17.10.2025 г., 09:51
#FactFriday Clean hands is one of the simplest and most effective ways to stay healthy and protect those around you from diseases👌 Washing your hands with soap under clean running water for just 20 seconds can reduce your risk of infection by up to 50%? 🙌🏽 Make handwashing a daily habit ✅️ #FactFriday#HandHygiene#HealthyLiving#NCDCNigeria
@ncdcgov · Post #3701 · 23.01.2023 г., 11:20
Viral Haemorrhagic Fevers such as #LassaFever spread mainly from person to person through direct & indirect contact. When properly done, #HandHygiene is very important to reduce the risk of healthcare workers' infection. Our #IPC guidelines for #VHFs⬇️ https://ncdc.gov.ng/themes/common/docs/protocols/111_1579986179.pdf
Hashtags