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.
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.
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
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...
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?
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.
By Adrien Hamelin | Dec 18, 2019 01:13 PM | Tags: experimental
The series continue.
C++ coroutines: Short-circuiting suspension, part 1
by Raymond Chen
From the article:
At the start of this series, I gave the basic idea for how the compiler generates code for co_await, but I left out some details for expository simplicity. There are some mysterious steps called “We’re not ready to talk about this step yet.”
Now it’s time to talk about one of those steps...
By willw | Dec 17, 2019 12:16 AM | Tags: None
A meta-programming challenge in compound type destructuring
The Modern C++ type CoDec Challenge
by Will Wray
From the article:
(Assumes intermediate to advanced level C++ with some meta skills.)
Find the most effective, modern way to:
- Decompose a compound type then
- Represent its structure and traverse it
...
What is it?
A challenge in the spirit of Herb's GotW running ∓20 days over NY 2020:
20 days of Modern C++ ranging from 'retro' TMP to latest C++2a features,
20 days of Post Modern C++ looking ahead to an era of static reflection.
- A personal challenge to learn about types, introspection and meta coding
- A community challenge towards effective methods of type decomposition
...
(Let the egg hunt
begin())
By Adi | Dec 17, 2019 12:15 AM | Tags: None
An introductions to creating generators with coroutines.
Brain Unrolling
by Adi Shavit
From the article:
This is a motivational and introductory post about generators. It focuses on how to write generators and generator ranges from a coroutine user point of view.
By Milad Kahsari Alhadi | Dec 17, 2019 12:13 AM | Tags: intermediate
All you need to know:
Substitution Failure is Error and Not An Error
by Milad Kahsari Alhadi
From article:
I decided to write an article about the Substitution Failure issue when you write generic programs with c++ for those people who are looking for a clear and step by step introduction about it (without making everything complicated). In this article you will learn what will happen when you call a template function.