By Adrien Hamelin | Mar 8, 2021 11:15 AM | Tags: c++20
The power of lambdas.
std::index_sequence and its Improvement in C++20
by Jonathan Boccara
From the article:
It would be great if we could iterate on the values of a std::tuple like we do for a std::vector or for other STL containers.
But we can’t. To iterate on the values inside of a tuple, we need to proceed in two steps...
By Daniel G Vergel | Mar 7, 2021 11:21 AM | Tags: c++20
This post, written in Spanish, provides a step-by-step guide to create an application that plots orbits of the Lorenz system in a 3-dimensional perspective window. This is achieved by using C++17/20 coding techniques and the Boost.Numeric.Odeint and Dlib libraries.
Plotting the Lorenz Attractor with C++20(Spanish)
by Daniel G Vergel
About the article:
This is a coding exercise that I often ask my students at the European University (Madrid, Spain) to complete as part of their programming training. In order to ease the gathering of data from the terminal, the article also uses a small C++20 library that prompts the user for inputs and handles any formatting errors. The details of its implementation are covered in a different article.
The blog tries to mitigate the lack of educational materials on modern C++ currently available in my native language. Code examples are nevertheless self-explanatory, and I hope, may be of interest to non-Spanish readers as well.
By Adrien Hamelin | Mar 5, 2021 03:10 PM | Tags: c++20
THe series continue.
Creating a co_await awaitable signal that can be awaited multiple times, part 3
by Raymond Chen
From the article:
Last time, we created an awaitable signal that can be awaited multiple times, but noted that it took kernel transitions a lot. Let’s implement the entire thing in user mode...
By Adrien Hamelin | Mar 5, 2021 03:08 PM | Tags: c++20
Interested to read it?
“Professional C++, 5th Edition” Released
by Marc Gregoire
From the article:
After working on it for a year, I’m proud to announce my new book “Professional C++, 5th Edition” is finished ��
It has been updated to the C++20 standard and uses certain C++20 features, such as modules and std::format(), throughout all examples...
By Adrien Hamelin | Mar 5, 2021 03:06 PM | Tags: c++20
The series continue.
Creating a co_await awaitable signal that can be awaited multiple times, part 2
by Raymond Chen
From the article:
Last time, we created an awaitable signal that can be awaited multiple times. We noted that one problem with the implementation is that the object couldn’t be copied: Everybody has to await the same object, which can create lifetime issues...
By Meeting C++ | Mar 5, 2021 03:53 AM | Tags: meetingcpp community
The monthly overview on upcoming C++ User Group meetings, online due to the pandemic...
Online C++ User Group Meetings in March 2021
by Jens Weller
From the article:
The monthly overview of upcoming User Group meetings, still online meetups due to the pandemic.
On March 16th Meeting C++ hosts the second online C++ job fair, RSVP via meetup!
By Adrien Hamelin | Mar 3, 2021 03:03 PM | Tags: c++20
First part.
Implementing Simple Futures with Coroutines
by Rainer Grimm
From the article:
Instead of return, a coroutine uses co_return returning its result. In this post, I want to implement a simple coroutine using co_return...
By Adrien Hamelin | Mar 3, 2021 03:01 PM | Tags: intermediate
Clarifying.
return first example
by Marius Elvert
From the article:
It seems my “return first” post was not as enlightening as I had hoped. It was posted on reddit, and while the majority of commenters completely missed the point, it wasn’t really clear for those that did not just read the title. Either way, I am to blame for that – the examples and my reasoning were not very conclusive. So let me try clearing up the confusion with a better example...
By Adrien Hamelin | Mar 3, 2021 02:54 PM | Tags: c++20
Harnessing the power of coroutines.
Creating a co_await awaitable signal that can be awaited multiple times, part 1
by Raymond Chen
From the article:
C++/WinRT asynchronous activities can be awaited only once. This is consistent with their intended usage pattern, which is for an application to start the activity, co_await the result, and then continue.
But maybe you want something like a Win32 event, where any number of people can co_await the event, and then once it is signaled, all the awaiters are resumed...
By Adrien Hamelin | Mar 2, 2021 03:34 PM | Tags: c++20
A new tool to simplify usage.
C++ Concepts: More than Syntactic Requirements
by Jonathan Boccara
From the article:
After years and years of expectation, concepts have finally made it in C++20.
Concepts are descriptions in code of a set of expressions that must be valid with a given type. Those are syntactic requirements. But there is more to concepts than that: concepts also have semantic requirements.
Before getting into that, here is a recap of what concepts are. If you’re already familiar with concepts you can skip to the section on semantic requirements...