Launching the Meeting C++ Community Survey

By Meeting C++ | Jan 8, 2020 08:31 AM | Tags: meetingcpp community

Take the Meeting C++ Community Survey!

Launching the Meeting C++ Community Survey

by Jens Weller

From the article:

One thing then often has bugged me when looking at the C++ community is that we don't really had good numbers on most things. Jetbrains, ISOCPP and Bartek's coding blog have launched surveys in the last years, which changed this a little. Also I've been doing some surveys on Twitter, giving some limited insight into C++ related topics. But Twitter surveys are very limited, and for a long time I had an idea on how to make this a continuous survey.

C++ User Group meetings in January 2020

By Meeting C++ | Jan 8, 2020 02:40 AM | Tags: meetingcpp community basics

The monthly overview on upcoming C++ User Group meetings all over the world!

C++ User Group meetings in January 2020

by Jens Weller

From the article:

Happy new years! The year has begun, and lots of C++ User Groups have their first meeting of 2020.

Would like to start your own group or looking for ideas in running your current group? Watch my talk from CppCon:

CppCon YT - CppCon 2019: Jens Weller “Starting and Running C++ User Groups”

C++ coroutines: The problem of the DispatcherQueue task that runs too soon, part 2--Raymond Chen

By Adrien Hamelin | Jan 7, 2020 12:42 PM | Tags: experimental

The series continue.

C++ coroutines: The problem of the DispatcherQueue task that runs too soon, part 2

by Raymond Chen

From the article:

Last time, we discovered a race condition in C++/WinRT’s resume_foreground(Dispatcher­Queue) function when it tries to resume execution on a dispatcher queue. Let’s try to fix it...

C++ coroutines: The problem of the synchronous apartment-changing callback

By Adrien Hamelin | Jan 7, 2020 12:40 PM | Tags: experimental

The series continue.

C++ coroutines: The problem of the synchronous apartment-changing callback

by Raymond Chen

From the article:

Today is a puzzle you can you can try to solve with the information you’ve learned about C++ coroutines and C++/WinRT...

C++20: Concepts - What we don't get--Rainer Grimm

By Adrien Hamelin | Jan 7, 2020 12:38 PM | Tags: experimental

Can't get everything.

C++20: Concepts - What we don't get

by Rainer Grimm

From the article:

The Template Introduction from the Concepts TS is a new way to use concepts. This syntactic variant is not included in the Concepts Draft and, therefore, in the C++20 standard. But, I don't know what the farther away future brings.

C++ Standard Version Mix-up

By Christoph Cullmann | Jan 5, 2020 12:32 AM | Tags: None

Libraries compiled with different C++ standard versions might not be as compatible as wanted.

C++ Standard Version Mix-up

by Christoph Cullmann

From the article:

We work with MSVC 2019 on Windows and all worked fine with LLVM 9.x, but with master, close to all my tests did now segfault in aligned_free.

Some months ago, the implementation of DenseMap got improved to use the allocate_buffer/deallocate_buffer functions to use (if possible) aligned allocation.

Unfortunately, this means, during the compilation of the library, the checks there ensure it doesn’t use these code paths, on the other side, during compilation of our tools, it does, as the allocation functions are fully inline in the header including the feature checks.

C++ coroutines: The co_await operator and the function search algorithm--Raymond Chen

By Adrien Hamelin | Dec 23, 2019 08:57 AM | Tags: experimental

The series continue.

C++ coroutines: The co_await operator and the function search algorithm

by Raymond Chen

From the article:

So you’re following along Kenny Kerr’s blog and you get to the part where he uses co_await on a time duration:

co_await 5s;​

so you try it:

#include <chrono>
using namespace std::chrono;

winrt::IAsyncAction Delay10Seconds()
{
   co_await 10s;
   co_return;
}

and you get the error message

no callable ‘await_resume’ function found for type ‘Expression’ where Expression=std::chrono::seconds

C++ coroutines: Defining the co_await operator--Raymond Chen

By Adrien Hamelin | Dec 23, 2019 08:53 AM | Tags: experimental

The series continue.

C++ coroutines: Defining the co_await operator

by Raymond Chen

From the article:

At the start of this series, I noted that there are three steps in obtaining an awaiter for an awaitable object. The first two were marked “We’re not read to talk about this yet.”

Well, now we’re ready to talk about one of them...

C++ coroutines: no callable ‘await_resume’ function found for type--Raymond Chen

By Adrien Hamelin | Dec 23, 2019 08:49 AM | Tags: experimental

THe series continue.

C++ coroutines: no callable ‘await_resume’ function found for type

by Raymond Chen

From the article:

You try to co_await something and get the error message

no callable ‘await_resume’ (or ‘await_ready’ or ‘await_suspend’) function found for type ‘Expression’

What does this mean?

C++ coroutines: Short-circuiting suspension, part 2-- Raymond Chen

By Adrien Hamelin | Dec 18, 2019 01:17 PM | Tags: experimental

The series continue.

C++ coroutines: Short-circuiting suspension, part 2

by Raymond Chen

From the article:

There’s one last section of the outline of compiler code generation for co_await that is marked “We’re not ready to talk about this step yet.” Let’s talk about that step.