Поиск в строке
С помощью метода IndexOf мы можем определить индекс первого вхождения отдельного символа или подстроки в строке.
Подобным образом действует метод LastIndexOf, только находит индекс последнего вхождения символа или подстроки в строку.
BY Библиотека задач по C# | тесты, код, задания
With the help of the Search Filters option, users can now filter search results by type. They can do that by using the new tabs: Media, Links, Files and others. Searches can be done based on the particular time period like by typing in the date or even “Yesterday”. If users type in the name of a person, group, channel or bot, an extra filter will be applied to the searches.
Telegram is a free app and runs on donations. According to a blog on the telegram: We believe in fast and secure messaging that is also 100% free. Pavel Durov, who shares our vision, supplied Telegram with a generous donation, so we have quite enough money for the time being. If Telegram runs out, we will introduce non-essential paid options to support the infrastructure and finance developer salaries. But making profits will never be an end-goal for Telegram.
Библиотека задач по C | тесты код задания from tr