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.

C++ coroutines: Short-circuiting suspension, part 1--Raymond Chen

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...

The Modern C++ type CoDec Challenge -- Will Wray

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:  

1. Decompose a compound type then  
2. 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())

Brain Unrolling, Generators and the Sweet Syntactic Sugar of Coroutines -- Adi Shavit

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.

Substitution Failure is Error and Not An Error -- Milad Kahsari Alhadi

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. 

C++ coroutines: Constructible awaitable or function returning awaitable?--Raymond Chen

By Adrien Hamelin | Dec 16, 2019 11:27 AM | Tags: experimental

The series continue.

C++ coroutines: Constructible awaitable or function returning awaitable?

By Raymond Chen

From the article:

Last time, we learned how to create simple awaitable objects by creating a structure that implements the await_suspend method (and relies on suspend_always to do the coroutine paperwork for us). We can then construct the awaitable object and then co_await on it...

Constexpr FizzBuzz – An Exercise in Compile-Time Calculations--Arne Mertz

By Adrien Hamelin | Dec 16, 2019 11:20 AM | Tags: c++17

The things you can do at compile time!

Constexpr FizzBuzz – An Exercise in Compile-Time Calculations

by Arne Mertz

From the article:

Recently, I have given a workshop about language features introduced in C++14 and C++17. Since a major part of those features includes constexpr things, I gave my trainees the task to port “FizzBuzz” to compile time. Here is a possible approach to that kind of problem...