⚙️ std::iota std::iota — алгоритм из библиотеки <numeric>, который заполняет диапазон значениями, начиная с указанного стартового числа, увеличивая его на 1 для каждого следующего элемента. Это полезно для генерации простых последовательностей чисел, индексов, номеров строк, тестовых данных без ручных циклов. C++ Learning 👩💻

Channel
C++ Learning
@cplusplus_tg
On this record: Growth · Engagement · What this channel posts · Advertising · Posts · Citations · Cite this entry
10,303subscribers
-23 since we began measuring on 7 August 2026
Risers and fallers across the register · movement among entries of 10,000–31,623.
Register entry
| Telegram ID | -1001506941396 |
|---|---|
| Type | Channel |
| Username | @cplusplus_tg |
| Description | № 4974310652 Обучающий канал по C++ По всем вопросам @mascarov_valentin Реклама на бирже - https://telega.in/c/Learning_pluses |
| Created | Between 1 August 2021 and 31 January 2023— estimated from Telegram’s id allocation, not measured. How this range is calculated. |
| First recorded | 7 August 2026 |
| Last confirmed live | 13 August 2026 |
| Measurements held | 7 |
| Confirmed unchanged | 1 time, most recently 13 August 2026 |
| On Telegram | t.me/cplusplus_tg |
Growth
| Measured (UTC) | Subscribers | Change |
|---|---|---|
| 13 Aug 2026, 01:05 | 10,303 | -3 |
| 11 Aug 2026, 23:58 | 10,306 | -1 |
| 11 Aug 2026, 02:36 | 10,307 | -4 |
| 10 Aug 2026, 03:32 | 10,311 | -4 |
| 9 Aug 2026, 00:52 | 10,315 | -6 |
| 8 Aug 2026, 00:24 | 10,321 | -5 |
| 7 Aug 2026, 02:15 | 10,326 | first reading |
Engagement
20 posts held, back to 31 December 2025 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 16 pagesof Telegram’s post history, 20 posts per page.
- ERR · 30 days
- 11.6%
- avg views ÷ 10,303 subscribers
- Avg views / post
- 1,190
- 1 post measured
- Reaction rate
- —
- this channel exposes no reaction counts
- Posts in window
- 1
- of 20 held
ERR is average views per post over the last 30 days divided by subscribers, the definition TGStat uses, so this figure is comparable with the one you will see elsewhere. It falls structurally as a channel grows: a high ERR on a small channel and a low one on a large channel describe reach mathematics, not quality. We publish the figure and the sample it came from and pass no verdict on it.
ER is defined industry-wide as (forwards + reactions + comments) ÷ views— note the denominator is views, not subscribers. Telegram’s public web preview carries views and reactions but not forward or comment counts, so the reaction rate above is the reactions term only and is therefore a floor: the true ER for this channel is higher by an amount we have not measured and will not estimate.
| Window | Rolling 30 days · latest post in window 23 July 2026 |
|---|---|
| Posts held | 20 (31 December 2025 – 23 July 2026) |
| Views total | 1,190 |
| Reactions total | — |
| Forwards / comments | not exposed by the public surface — not measured, not estimated |
| Readings taken | 13 Aug 2026, 05:17 UTC |
Views are a single reading per post, taken at the time above. A post published in the last day or two is still accumulating views, which pulls the 30-day average down slightly. That is a property of the standard definition rather than a fault in it, so we keep the definition rather than “correcting” the number into something nobody can reproduce.
Precision. Telegram publishes view counts on its public widget in short form — 8.12K, 3.7M — so any reading at or above 1,000 reaches us rounded to three significant figures, and only counts below 1,000 are exact. Averages and rates derived from them are shown to the same precision rather than to the unit: a figure like 3,701,250 would assert digits nobody measured.
Reaction counts are published per emoji and rounded the same way, so a total below 1,000 is exact and a larger one is a sum that may carry a rounded component from each emoji above 1,000. Because it is a sum, it does not look rounded — read a large reaction total as three significant figures per contributing emoji rather than as the figure it prints.
What this channel posts
- Photos
- ≈1,490
- Videos
- ≈4
- Links
- ≈1,050
Lifetime counters from Telegram’s own channel header, read 13 August 2026 — not the date at the top of this page, which is when the subscriber count was last read. A count marked ≈ was rounded by Telegram before we ever saw it — t.me prints these counters in full below 1,000 and to three significant figures above, so ≈142,000 means somewhere between 141,500 and 142,499.
Advertising
- Ad load
- 5.00%
- 1 of 20 posts carry an ad marker
- Regulatory tokens
- 1
- posts carrying an erid · 1 distinct token
- Median views · ads
- 1,920
- over 1 measured post
- Median views · rest
- 3,280
- over 19 measured posts
An ad marker, not a judgement about a post. A post is counted here because it carries one of two explicit markings: an erid token, which Russian law has required on paid placements since 2022 and which is issued against a specific advertising contract, or a #реклама / #ad hashtag in the body, which is the channel declaring it itself. The first is documentary; the second is a self-declaration and is weaker. No classifier reads the text and decides — nothing on this site guesses that a post is an advertisement.
This is a floor, and it can only ever be a floor.A channel that runs paid placements without marking them produces no marker for us to count, and an unmarked ad is indistinguishable from an ordinary post on the public surface. The ad load above therefore means “the share of posts that declared themselves”, never “the share of posts that were paid for”. A low figure is not evidence of a channel that runs few ads.
Both figures are medians, and no ratio between them is published. Each is a view reading that actually occurred on a post, picked by percentile_disc rather than averaged, so one viral post cannot move it and no interpolated value is invented between two readings. The sample on one side is under five posts, which is too thin to compare. The two figures are shown side by side with the count behind each, and deliberately not divided into a headline like “ads get x% fewer views” — an arithmetic that is easy to print and, at this sample size, means nothing.
| erid | Posts | First seen | Last seen |
|---|---|---|---|
| 2VtzqxWHCtS | 1 | 13 July 2026 | 13 July 2026 |
A token repeated across several posts is one advertising contract placed more than once, which is what the identifier is for. The strings are reproduced exactly as they appeared in the post or in its click-through URL and are not validated against any registry — we record the marker a channel published, and whether it resolves to a real contract is a question for the register that issued it.
Measured over the 20 most recent posts we hold, published 31 December 2025 to 23 July 2026. Views are the latest single reading held for each post, and any reading at or above 1,000 is rounded by Telegram to three significant figures.
Recent posts
🔥 Три разных человека. Три разных проекта. Один и тот же подход. — Юра взял «скучную» нишу с готовым спросом → сначала печальные $100/мес, через год уже ~$10K/мес — Денис сделал Telegram-игру в одиночку на основе AI → ~ $1500 за 1,5 месяца после запуска — Аня без кода запустила AI-бота для изучения английского → первые ~$200 уже в 1 месяц Разные результаты. Разный масштаб. Но общие правила: 1. не придумывать «гени…
⚙️ std::lcm std::lcm вычисляет наименьшее общее кратное (НОК) двух чисел. Это полезно для задач на синхронизацию событий, работы с дробями и математических расчётов. C++ Learning 👩💻
⚙️ std::gcd std::gcd вычисляет наибольший общий делитель (НОД) двух чисел. Это полезно для задач на делимость, сокращения дробей и численных алгоритмов. C++ Learning 👩💻
Недавние математические интриги вокруг OpenAI снова подняли вопрос: ИИ действительно решает сложные задачи или просто находит готовые доказательства в уже существующих текстах? В любом случае без математики тут никуда: алгоритмы, логика, доказательства, проверка гипотез — всё это база сильного разработчика. В канале «Зачем мне эта математика?» такие истории разбирают понятно: от задач Эрдёша до ML и графов. Подпис…
⚙️ std::exchange std::exchange заменяет значение переменной на новое и возвращает старое. Это полезно для сброса состояния, перемещения значений и написания атомарных операций. C++ Learning 👩💻
⚙️ std::clamp std::clamp ограничивает значение в пределах заданного диапазона. Это полезно для валидации чисел, нормализации данных и защиты от выхода за границы. C++ Learning 👩💻
⚙️ std::launder std::launder (C++17) используется для безопасного доступа к объекту после его повторной инициализации в той же памяти с помощью placement new. Это важно при низкоуровневых операциях, связанных с ручным управлением жизненным циклом объектов. C++ Learning 👩💻
⚙️ std::unexpected std::unexpected (устаревший в C++17, но интересный исторически) используется для установки обработчика непредусмотренных исключений, выбрасываемых функциями с noexcept(false) или throw()-спецификацией. Полезно для отладки и контроля исключений в старом коде. C++ Learning 👩💻
⚙️ std::default_sentinel std::default_sentinel (C++20) представляет универсальный конец диапазона и используется с пользовательскими итераторами и ranges. Это полезно для создания "открытых" и ленивых представлений данных. C++ Learning 👩💻
⚙️ std::to_address() std::to_address() (C++20) извлекает обычный указатель из объекта-итератора или умного указателя. Это полезно для универсальной работы с памятью без зависимости от типа указателя. C++ Learning 👩💻
⚙️ std::uninitialized_default_construct_n std::uninitialized_default_construct_n (C++17) вызывает default-конструкторы объектов в необработанном блоке памяти без инициализации значений. Это полезно при ручном управлении памятью и написании аллокаторов или контейнеров. C++ Learning 👩💻
Showing the 12 most recent of 20 posts we hold for @cplusplus_tg. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.
Mentions
Names
Channels on the register whose handles appear in this channel's posts.
A mention is a weaker signal than a forward and is counted separately for that reason — naming a channel is not republishing it, and a handle in a post body is easy to place deliberately. The post counts beside each row below are distinct posts in which the handle appeared, from posts we have read on both sides — the “Named by N registered channels” figure above is a different count, of distinct NAMING CHANNELS rather than posts, and is not the sum of the rows under it.
Cite this entry
A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 13 August 2026 — this entry's latest reading, not the date you are reading this.
“C++ Learning” (@cplusplus_tg), 10,303 subscribers as measured 13 August 2026. Telegram Register, tgregister.com/channel/cplusplus_tg.
Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.