this->notes.

In C++11, there are two loops over all elements (range based for and for_each). Is there any reason to prefer one over the other or are there situations where one is a better fit?

for (auto& e...

278 views13:00

this->notes.

#cpp
https://belaycpp.com/2021/06/16/exceptions-are-just-fancy-gotos/

284 views13:00

this->notes.

#cpp
constexpr virtual.
https://www.cppstories.com/2021/constexpr-virtual/

C++ Stories

C++20 Oxymoron: constexpr virtual

Two keywords, constexpr and virtual - can those two work together? Virtual implies runtime polymorphism, while constexpr suggests constant expression evaluation. It looks like we have a contradiction, does it?
Read on and see why those conflicting terms might…

278 views13:00

this->notes.

#common
Какая-то статистика от jetbrains.
https://www.jetbrains.com/ru-ru/lp/devecosystem-2021/cpp/#Which-C-standards-do-you-regularly-use

JetBrains: Developer Tools for Professionals and Teams

Разработка на C++ — Инфографика «Экосистема разработки в 2021 году»

«Экосистема разработки в 2021 году» — это подробный отчет о том, что происходит в мире программирования: чем живут разработчики, какие языки, технологии и инструменты они используют.

293 views11:33

this->notes.

#cpp #stackoverflow
https://stackoverflow.com/a/10290176

Stack Overflow

Forward Declaration of variables/classes in std namespace

I usually use forward declaration predominantly, if I have a class that does not need complete definition in .hpp file

Ex)

//B.hpp

namespace A_file {
class A;
}

namespace B_file {

cla...

294 views13:00

this->notes.

#cpp
https://www.cppstories.com/2021/constexpr-vecstr-cpp20/

C++ Stories

constexpr vector and string in C++20 and One Big Limitation

constexpr started small in C++11 but then, with each Standard revision, improved considerably. In C++20, we can say that there’s a culmination point as you can even use std::vector and std::string in constant expressions!
Let’s look at use cases, required…

303 views13:00

this->notes.

#cpp

gsl::finally(like defer in golang).
https://www.bfilipek.com/2017/04/finalact.html

C++ Stories

Beautiful code: final_act from GSL

Sometimes there’s a need to invoke a special action at the end of the scope: it could be a resource releasing code, flag set, code guard, begin/end function calls, etc. Recently, I’ve found a beautiful utility that helps in that cases.
Let’s meet gsl::fi…

304 views13:00

this->notes.

#cpp
Множество различных(возможно в своём большинстве бесполезных) идиом C++.
https://en.wikibooks.org/wiki/More_C%2B%2B_Idioms

297 views13:00

this->notes.

#cpp
https://www.cppstories.com/2021/no-unique-address/

C++ Stories

Empty Base Class Optimisation, no_unique_address and unique_ptr

C++20 added a couple of new attributes in the form of [[attrib_name]]. One of them - [[no_unique_address]] - can have surprising effects on the code! In this blog post, you’ll learn how to optimize your classes’ layout and make some data members “disappear”.…

309 views13:00

this->notes.

#python #common
Метод, которым python решает проблемы с ромбовидным наследованием.
https://ru.wikipedia.org/wiki/C3-линеаризация

327 viewsedited 13:00

this->notes.

#cpp #proposals
Proposal for std::expected: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p0323r10.html
Cool video about it: https://www.youtube.com/watch?v=PH4WBuE1BHI

318 viewsedited 13:00

this->notes.

#cpp #proposals
Some new and interesting proposals:
1. auto(x): http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p0849r8.html
2. std::hive(std:colony): http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p0447r16.html
3. Function to mark unreachable code: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p0627r5.pdf
4. Fix the range‐based for loop: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p2012r1.pdf
5. Change scope of lambda trailing-return-type: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p2036r3.html
6. Remove unsafe conversions of unique_ptr<T>: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p2413r0.html
7. A Unified Executors Proposal for C++: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p0443r14.html

310 views13:00

this->notes.

#cpp
Асинхронность в С++20.
https://habr.com/ru/company/yandex/blog/575062/

Хабр

Асинхронность в С++20. Доклад в Яндексе

Привет, это Григорий Демченко из WhatsApp. Мой доклад посвящён использованию сопрограмм в C++20. Я не стал говорить про низкоуровневые примитивы и то, как компилятор поддерживает сопрограммы и...

336 views13:00

this->notes.

#cpp
На мой взгляд, очень нужная штука, которая была предложена ещё где-то в 2016.
https://en.cppreference.com/w/cpp/container/vector/erase2

331 views13:00

this->notes.

#cpp
https://belaycpp.com/2021/05/03/passing-an-enum-by-parameter/

320 views13:00

this->notes.

#cpp
Выберите, что вам больше нравится:
это https://itnext.io/c-20-modules-complete-guide-ae741ddbae3d
или это https://blog.feabhas.com/2021/08/c20-modules-with-gcc11/ .

Medium

C++20 Modules — Complete Guide

Compilers and build systems are slowly starting to support C++20 modules. Perfect time for you to read this guide and benefit from the…

349 viewsedited 13:00

this->notes.

#cpp
Do not use raw loops! : )
https://belaycpp.com/2021/06/22/dont-use-raw-loops/

344 views13:00

this->notes.

#cpp
День смерти стандартной библиотеки.
https://habr.com/ru/post/490222/
(не всё ж хорошее постить)

Хабр

День смерти стандартной библиотеки

На днях в Праге комитет по стандартизации С++ провел ряд опросов по вопросу изменения ABI, и в конечном счете было решено ничего в нем не менять. Аплодисментов в зале слышно не было. Я думаю, мы не...

352 views13:00

this->notes.

#cpp
Check this: https://codeforces.com/contest/1545/submission/122360101
And then this:
https://en.cppreference.com/w/cpp/numeric/valarray
https://en.cppreference.com/w/cpp/numeric/valarray/slice

351 views13:00

this->notes.

#cpp
Includes best practices.
https://www.cppstories.com/2013/03/include-little-toolkit/

C++ Stories

#Include little toolkit

Include Guards, Pragma Once, Predeclarations and other hints that might be useful when dealing with includes.
What can we do with file including in C++? Do we need to put all the other header files of the project (plus third party libraries) in every file…

368 views13:00

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