11 Sept 2021, 06:09 UTC219 viewsread 11 August 2026
Forwarded from @cppproglib
Оптимизация 128-битного деления. https://proglib.io/w/3c149a9a
Signed Andrii Orap
Channel
Useful C++ facts and tricks
@useful_programming_facts
On this record: Growth · Engagement · What this channel posts · Posts · Citations · Cite this entry
33subscribers
+0 since we began measuring on 7 August 2026
Risers and fallers across the register · movement among entries of Under 1,000.
Register entry
| Telegram ID | -1001443953055 |
|---|---|
| Type | Channel |
| Username | @useful_programming_facts |
| Description | If you know nice fact or trick, please, share with it :) |
| Created | 25 January 2019 — measured — dated from the channel’s first post |
| First recorded | 11 August 2026 |
| Last confirmed live | 11 August 2026 |
| Measurements held | 2 |
| On Telegram | t.me/useful_programming_facts |
Growth
| Measured (UTC) | Subscribers | Change |
|---|---|---|
| 11 Aug 2026, 01:01 | 33 | no change |
| 7 Aug 2026, 13:08 | 33 | first reading |
Engagement
18 posts held, back to 25 January 2019 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 1 pageof Telegram’s post history, 20 posts per page.
Nothing published in the last 30 days. ERR and ER are rolling 30-day measures, so there is nothing to compute — we hold 18 posts for this entry, the most recent from 11 September 2021. An engagement rate over an empty window would be a number about nothing.
What this channel posts
- Photos
- 9
- Links
- 5
Lifetime counters from Telegram’s own channel header, read 11 August 2026 — not the date at the top of this page, which is when the subscriber count was last read. Below Telegram’s rounding threshold, so these counts are exact.
Recent posts
27 Aug 2021, 21:59 UTC230 viewsread 11 August 2026
Forwarded from @cppproglib
C++17 STL Cookbook (2017) Автор: Jacek Galowicz C++ прошел большой путь и применяется практически во всех областях. Быстрый, эффективный и гибкий, он используется для решения многих задач. Если вы хотите понять практическую полезность C++ 17 STL для написания более умного, полностью переносимого кода, то эта книга для вас. Скачать книгу
Signed Andrii Orap
27 Aug 2021, 20:22 UTC169 viewsread 11 August 2026
Forwarded from @cppproglib
Топ-5 вопросов с собеседований на позиции среднего уровня. https://youtu.be/rcMMqqwxNLw
Signed Andrii Orap
10 Dec 2019, 21:45 UTC305 viewsread 11 August 2026
Did you know that deque is default container for stack and queue? https://en.cppreference.com/w/cpp/container/stack https://en.cppreference.com/w/cpp/container/queue
Signed Andrii Orap
17 Feb 2019, 11:49 UTC487 viewsread 11 August 2026
Photo
How to convert letter to lowercase? Function tolower(char c) returns lowercase equivalent to c, if such value exists, or c (unchanged) otherwise. Function toupper(char c) does the same but in uppercase.
Signed Andrii Orap
10 Feb 2019, 19:04 UTC486 viewsread 11 August 2026
https://codeforces.com/blog/entry/64547 https://codeforces.com/blog/entry/65146 https://codeforces.com/blog/entry/65147
Signed Andrii Orap
10 Feb 2019, 18:47 UTC323 viewsread 11 August 2026
Photo
How to check if character is alphabetic? Function isalpha(char c) returns a value different from zero (i.e., true) if indeed c is an alphabetic letter. Zero (i.e., false) otherwise.
Signed Andrii Orap
30 Jan 2019, 15:38 UTC356 viewsread 11 August 2026
Photo
How to convert string to integer? Useful functions stoi and strtol (for long long).
Signed Andrii Orap
29 Jan 2019, 17:52 UTCviews —
Channel name was changed to «Useful C++ facts and tricks»
29 Jan 2019, 17:50 UTC324 viewsread 11 August 2026
Photo
How to check if a character c is a digit? '0' <= c <= '9' ? Ha-ha, it's the 21st century. Use function isdigit :)
Signed Andrii Orap
29 Jan 2019, 17:29 UTC284 viewsread 11 August 2026
Photo
How to check if a number is a power of 2? Useful bit trick :)
Signed Andrii Orap
27 Jan 2019, 10:19 UTC288 viewsread 11 August 2026
Photo
Just useful macros for debugging
Signed Andrii Orap
Showing the 12 most recent of 18 posts we hold for @useful_programming_facts. 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.
Forward network
Republishes
Channels on the register whose posts this channel has forwarded.
Built only from forwarded posts we have actually read, on both sides. Coverage is early and deliberately incomplete: a missing link means we have not read the post that would prove it, never that the relationship does not exist. Counts are distinct forwarded posts observed, so they only ever go up as we read more.
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 11 August 2026 — this entry's latest reading, not the date you are reading this.
“Useful C++ facts and tricks” (@useful_programming_facts), 33 subscribers as measured 11 August 2026. Telegram Register, tgregister.com/channel/useful_programming_facts.
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.