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: #shareholders
@uzcsd · Post #2834 · 18.11.2022 г., 11:20
DEPO - #STATISTICS CHANGES IN STRUCTURE OF SHAREHOLDERS The number of JSCs totaled 631 and the aggregate volume of shares issues totaled UZS 165 622.4 as of 18.11.2022. The aggregate volume of state owned share in 225 JSCs totaled UZS 133 689.2 billion, i.e. 80.7 %. #structure#shareholders#share#infographics#statistics#changes deponet.uz|Tg|Fb|Inst|Youtube
@uzcsd · Post #2818 · 11.11.2022 г., 09:45
DEPO - #STATISTICS CHANGES IN STRUCTURE OF SHAREHOLDERS The number of JSCs totaled 631 and the aggregate volume of shares issues totaled UZS 165 616.4 as of 11.11.2022. The aggregate volume of state owned share in 225 JSCs totaled UZS 133 690.1 billion, i.e. 80.7 %. #structure#shareholders#share#infographics#statistics#changes deponet.uz|Tg|Fb|Inst|Youtube
@uzcsd · Post #2797 · 04.11.2022 г., 10:25
DEPO - #STATISTICS CHANGES IN STRUCTURE OF SHAREHOLDERS The number of JSCs totaled 630 and the aggregate volume of shares issues totaled UZS 165 616.2 as of 04.11.2022. The aggregate volume of state owned share in 225 JSCs totaled UZS 133 690.3 billion, i.e. 80.7 %. #structure#shareholders#share#infographics#statistics#changes deponet.uz|Tg|Fb|Inst|Youtube
@uzcsd · Post #2783 · 28.10.2022 г., 09:20
DEPO - #STATISTICS CHANGES IN STRUCTURE OF SHAREHOLDERS The number of JSCs totaled 631 and the aggregate volume of shares issues totaled UZS 165 616.2 as of 28.10.2022. The aggregate volume of state owned share in 226 JSCs totaled UZS 133 687.6 billion, i.e. 80.7 %. #structure#shareholders#share#infographics#statistics#changes deponet.uz|Tg|Fb|Inst|Youtube
@uzcsd · Post #2775 · 21.10.2022 г., 12:16
DEPO - #STATISTICS CHANGES IN STRUCTURE OF SHAREHOLDERS The number of JSCs totaled 631 and the aggregate volume of shares issues totaled UZS 164 689.5 as of 21.10.2022. The aggregate volume of state owned share in 226 JSCs totaled UZS 133 687.6 billion, i.e. 81.2 %. #structure#shareholders#share#infographics#statistics#changes deponet.uz|Tg|Fb|Inst|Youtube
@uzcsd · Post #2760 · 14.10.2022 г., 11:55
DEPO - #STATISTICS CHANGES IN STRUCTURE OF SHAREHOLDERS The number of JSCs totaled 631 and the aggregate volume of shares issues totaled UZS 164 619.5 as of 14.10.2022. The aggregate volume of state owned share in 226 JSCs totaled UZS 133 677.9 billion, i.e. 81.2 %. #structure#shareholders#share#infographics#statistics#changes deponet.uz|Tg|Fb|Inst|Youtube
@uzcsd · Post #2743 · 07.10.2022 г., 09:22
DEPO - #STATISTICS CHANGES IN STRUCTURE OF SHAREHOLDERS The number of JSCs totaled 631 and the aggregate volume of shares issues totaled UZS 164 609.8 as of 07.10.2022. The aggregate volume of state owned share in 226 JSCs totaled UZS 133 677.9 billion, i.e. 81.2 %. #structure#shareholders#share#infographics#statistics#changes deponet.uz|Tg|Fb|Inst|Youtube
@uzcsd · Post #2724 · 30.09.2022 г., 12:24
DEPO - #STATISTICS CHANGES IN STRUCTURE OF SHAREHOLDERS The number of JSCs totaled 631 and the aggregate volume of shares issues totaled UZS 164 597.6 as of 30.09.2022. The aggregate volume of state owned share in 225 JSCs totaled UZS 133 665.7 billion, i.e. 81.2 %. #structure#shareholders#share#infographics#statistics#changes deponet.uz|Tg|Fb|Inst|Youtube
@uzcsd · Post #2716 · 23.09.2022 г., 13:02
DEPO - #STATISTICS CHANGES IN STRUCTURE OF SHAREHOLDERS The number of JSCs totaled 631 and the aggregate volume of shares issues totaled UZS 164 397.9 as of 23.09.2022. The aggregate volume of state owned share in 226 JSCs totaled UZS 133 348.9 billion, i.e. 81.1 %. #structure#shareholders#share#infographics#statistics#changes deponet.uz|Tg|Fb|Inst|Youtube
@uzcsd · Post #2708 · 16.09.2022 г., 15:35
DEPO - #STATISTICS CHANGES IN STRUCTURE OF SHAREHOLDERS The number of JSCs totaled 631 and the aggregate volume of shares issues totaled UZS 163 200.5 as of 16.09.2022. The aggregate volume of state owned share in 226 JSCs totaled UZS 132 889.5 billion, i.e. 81.4 %. #structure#shareholders#share#infographics#statistics#changes deponet.uz|Tg|Fb|Inst|Youtube
@uzcsd · Post #2688 · 09.09.2022 г., 12:43
DEPO - #STATISTICS CHANGES IN STRUCTURE OF SHAREHOLDERS The number of JSCs totaled 631 and the aggregate volume of shares issues totaled UZS 163 200.4 as of 09.09.2022. The aggregate volume of state owned share in 226 JSCs totaled UZS 132 895.8 billion, i.e. 81.4 %. #structure#shareholders#share#infographics#statistics#changes deponet.uz|Tg|Fb|Inst|Youtube
@uzcsd · Post #2671 · 26.08.2022 г., 12:54
DEPO - #STATISTICS CHANGES IN STRUCTURE OF SHAREHOLDERS The number of JSCs totaled 630 and the aggregate volume of shares issues totaled UZS 163 190.4 as of 26 August 2022. The aggregate volume of state owned share in 226 JSCs totaled UZS 132 895.8 billion, i.e. 81.4 %. #structure#shareholders#share#infographics#statistics#changes deponet.uz|Tg|Fb|Inst|Youtube