Anders Schau Knatten
@knatten.bsky.social
I like C++, industrial music, and figuring out how computers work. Author of C++ Brain Teasers, http://blog.knatten.org, https://cppquiz.org and https://moduloone.com.
Reposted by Anders Schau Knatten
We just published a new question! Is there a data race here? https://cppquiz.org/quiz/question/400
November 10, 2025 at 9:00 AM
We just published a new question! Is there a data race here? https://cppquiz.org/quiz/question/400
Reposted by Anders Schau Knatten
Funding: if your mid/large business uses Dear ImGui - and maybe you are approaching end of year budget/planning etc. - please consider reaching out (PM/email) so I can help you help Dear ImGui !
November 5, 2025 at 8:00 PM
Funding: if your mid/large business uses Dear ImGui - and maybe you are approaching end of year budget/planning etc. - please consider reaching out (PM/email) so I can help you help Dear ImGui !
Reposted by Anders Schau Knatten
We just published a new question! This one makes me think of JavaScript... https://cppquiz.org/quiz/question/403
November 3, 2025 at 9:00 AM
We just published a new question! This one makes me think of JavaScript... https://cppquiz.org/quiz/question/403
Reposted by Anders Schau Knatten
Join us next week in Berlin or online!
November 2, 2025 at 1:00 PM
Join us next week in Berlin or online!
We (Modulo One) have a new single out today! It's a melodic techno track with a dark story.
Links to YouTube, Spotify, etc at distrokid.com/hyperfollow/...
Links to YouTube, Spotify, etc at distrokid.com/hyperfollow/...
October 31, 2025 at 5:31 PM
We (Modulo One) have a new single out today! It's a melodic techno track with a dark story.
Links to YouTube, Spotify, etc at distrokid.com/hyperfollow/...
Links to YouTube, Spotify, etc at distrokid.com/hyperfollow/...
New post on C++ on a Friday! "A prvalue is not a temporary" blog.knatten.org/2025/10/31/a...
A prvalue is not a temporary
This is part one of a series of blog posts on temporaries, copies, return value optimization, and passing by value vs. reference. A good place to start, and the point of this first article, is how …
blog.knatten.org
October 31, 2025 at 8:32 AM
New post on C++ on a Friday! "A prvalue is not a temporary" blog.knatten.org/2025/10/31/a...
Reposted by Anders Schau Knatten
We just published a new question! This one was contributed by Lino Gamba. https://cppquiz.org/quiz/question/404
October 27, 2025 at 7:50 AM
We just published a new question! This one was contributed by Lino Gamba. https://cppquiz.org/quiz/question/404
Just two weeks until Meeting C++! Who's coming? meetingcpp.com/mcpp/schedule/
@meetingcpp.bsky.social
@meetingcpp.bsky.social
Meeting C++ 2025 live schedule
meetingcpp.com
October 22, 2025 at 7:59 AM
Just two weeks until Meeting C++! Who's coming? meetingcpp.com/mcpp/schedule/
@meetingcpp.bsky.social
@meetingcpp.bsky.social
Reposted by Anders Schau Knatten
We just published a new user contributed question! https://cppquiz.org/quiz/question/398
October 20, 2025 at 7:50 AM
We just published a new user contributed question! https://cppquiz.org/quiz/question/398
Reposted by Anders Schau Knatten
We just published a new question! This one was contributed by GitHub user demercurizer. https://cppquiz.org/quiz/question/394
October 13, 2025 at 7:50 AM
We just published a new question! This one was contributed by GitHub user demercurizer. https://cppquiz.org/quiz/question/394
Some pictures from my C++ Quiz at @ndcconferences.com TechTown. Thanks to everyone who came, and congratulations to the reMarkable team who won with a very impressive score!
October 10, 2025 at 8:44 AM
Some pictures from my C++ Quiz at @ndcconferences.com TechTown. Thanks to everyone who came, and congratulations to the reMarkable team who won with a very impressive score!
Reposted by Anders Schau Knatten
We just published a new user contributed question! https://cppquiz.org/quiz/question/393
October 6, 2025 at 7:40 AM
We just published a new user contributed question! https://cppquiz.org/quiz/question/393
Reposted by Anders Schau Knatten
We just published a new question! This one was contributed by Armen Aslanyan: https://cppquiz.org/quiz/question/391
September 29, 2025 at 7:20 AM
We just published a new question! This one was contributed by Armen Aslanyan: https://cppquiz.org/quiz/question/391
My proposal to C++ Under The Sea was accepted, so I'll be visiting for the first time! I'll be talking about the two memory models (language and CPU). Looking forward to it! cppunderthesea.nl
C++ Under the Sea 2025 – International C++ Conference 2025
cppunderthesea.nl
September 28, 2025 at 7:26 AM
My proposal to C++ Under The Sea was accepted, so I'll be visiting for the first time! I'll be talking about the two memory models (language and CPU). Looking forward to it! cppunderthesea.nl
On the 🚄 to @ndcconferences.com TechTown, eating candy and chuckling to myself at this question for the Wednesday evening C++ pub quiz. What's the question? You'll have to wait and see...
September 21, 2025 at 5:51 PM
On the 🚄 to @ndcconferences.com TechTown, eating candy and chuckling to myself at this question for the Wednesday evening C++ pub quiz. What's the question? You'll have to wait and see...
Get my book at 40% off!
There's a flash sale at @pragprog.com right now, and you can get all their books at 40% off with the promo code "flashsale".
pragprog.com/titles/akbra...
There's a flash sale at @pragprog.com right now, and you can get all their books at 40% off with the promo code "flashsale".
pragprog.com/titles/akbra...
September 18, 2025 at 12:06 PM
Get my book at 40% off!
There's a flash sale at @pragprog.com right now, and you can get all their books at 40% off with the promo code "flashsale".
pragprog.com/titles/akbra...
There's a flash sale at @pragprog.com right now, and you can get all their books at 40% off with the promo code "flashsale".
pragprog.com/titles/akbra...
Happy to announce another Pre-NDC-TechTown Oslo C++ Users Group Meetup! This year we'll have a talk by Klaus Iglberger, and as usual, @ndcconferences.com is sponsoring pizza. www.meetup.com/ocppug/event...
September 13, 2025 at 6:40 AM
Happy to announce another Pre-NDC-TechTown Oslo C++ Users Group Meetup! This year we'll have a talk by Klaus Iglberger, and as usual, @ndcconferences.com is sponsoring pizza. www.meetup.com/ocppug/event...
I've never made a PR to ConanCenter before. There was a fix in ffmpeg 4.4.5 which I need in order for ffmpeg 4.* to compile with GCC >12. ConanCenter currently support ffmpeg 7.1.1 and 4.4.4. Is it likely that they'll accept a PR which adds 4.4.6?
September 8, 2025 at 12:55 PM
I've never made a PR to ConanCenter before. There was a fix in ffmpeg 4.4.5 which I need in order for ffmpeg 4.* to compile with GCC >12. ConanCenter currently support ffmpeg 7.1.1 and 4.4.4. Is it likely that they'll accept a PR which adds 4.4.6?
Clang-tidy 21 wants you to prefer scoped_lock over lock_guard. I feel scoped_lock should be a specialized tool when you need to lock several mutexes. It also allows you to pass it zero mutexes, which for a bug lock_guard doesn't allow: godbolt.org/z/WzG4YeP83
Do you think clang-tidy is right?
Do you think clang-tidy is right?
Compiler Explorer - C++ (x86-64 clang (trunk))
int main() {
std::mutex m;
{
// Normal use case
std::lock_guard l{m};
}
{
// Fails to compile if you forget to pass it the mutex, good!
std::lock_guard ...
godbolt.org
September 1, 2025 at 7:24 AM
Clang-tidy 21 wants you to prefer scoped_lock over lock_guard. I feel scoped_lock should be a specialized tool when you need to lock several mutexes. It also allows you to pass it zero mutexes, which for a bug lock_guard doesn't allow: godbolt.org/z/WzG4YeP83
Do you think clang-tidy is right?
Do you think clang-tidy is right?
Can someone help me with an Asio question? Does an initiating function synchronize (memory model-wise) with the corresponding completion handler? stackoverflow.com/questions/79...
Do asio initiating functions synchronize with the completion handlers?
I'm trying to understand the memory order related to asio initiating functions and completion handlers, but I can't find any documentation on this.
Asio examples tend to start the io_context::run t...
stackoverflow.com
August 8, 2025 at 9:27 AM
Can someone help me with an Asio question? Does an initiating function synchronize (memory model-wise) with the corresponding completion handler? stackoverflow.com/questions/79...
I'll be back at the @meetingcpp.bsky.social in Berlin this year to speak about the two memory models! Really happy about this since it's only my second time there and I didn't make the cut last year. Looking forward to it! meetingcpp.com/mcpp/schedul...
Anders Schau Knatten - The Two Memory Models
Programming languages like C, C++, and Rust all define a memory model, which allows you to reason about the ordering of memory operations in your program
meetingcpp.com
June 26, 2025 at 7:07 PM
I'll be back at the @meetingcpp.bsky.social in Berlin this year to speak about the two memory models! Really happy about this since it's only my second time there and I didn't make the cut last year. Looking forward to it! meetingcpp.com/mcpp/schedul...
Buy my C++ book! Or get three chapters for free at pragprog.com/titles/akbra... (no registration required)
June 18, 2025 at 4:34 PM
Buy my C++ book! Or get three chapters for free at pragprog.com/titles/akbra... (no registration required)
Meetup with Oslo C++ Users Group in one hour!
June 16, 2025 at 1:57 PM
Meetup with Oslo C++ Users Group in one hour!
