October 25, Pavia, Italy
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November 3-8, Kona, HI, USA
By Adrien Hamelin | Feb 8, 2021 02:02 PM | Tags: advanced
Lambda magic.
How std::any Works
by Jonathan Boccara
From the article:
In the previous post we’ve seen a very nice technique to use value semantics with inheritance and virtual methods, which was made possible by std::any.
Given its usefulness, it would be interesting to better understand std::any. Indeed, std::any is sometimes said to be “the modern void*“. But it does much more than a void*...
By Adrien Hamelin | Feb 8, 2021 01:58 PM | Tags: c++20
New possibilities.
Abbreviated Function Templates and Constrained Auto
by Sy Brand
From the article:
Declaring function templates in C++ has always been quite verbose. C++20 added a new way of doing so that is more terse and more consistent with lambdas: abbreviated function templates. This short post will show how to use this syntax and how it applies to C++20 concepts...
By Adrien Hamelin | Feb 8, 2021 01:44 PM | Tags: intermediate c++20
Many ways.
12 Different Ways to Filter Containers in Modern C++
by Bartlomiej Filipek
From the article:
Do you know how many ways we can implement a filter function in C++?
While the problem is relatively easy to understand - take a container, copy elements that match a predicate and the return a new container - it’s good to exercise with the Standard Library and check a few ideas. We can also apply some Modern C++ techniques.
Let’s start!
By Meeting C++ | Feb 5, 2021 08:08 AM | Tags: meetingcpp community c++17 c++14 c++11 basics
Its now 6 years since Meeting C++ publishes a weekly blogroll for C++!
6 years of Meeting C++ Blogrolls
by Jens Weller
From the article:
Today 6 years ago the first weekly blogroll of Meeting C++ was released.
Since then it has been released on (most) Fridays, giving you a weekly overview of what happend in the C++ Blog scene and Videos in the past 7 days. Since last year...
By Andrzej Krzemienski | Feb 4, 2021 12:24 PM | Tags: None
"Contract support" is one of the things actively developed for C++.
Contracts, Preconditions & Invariants
By Andrzej Krzemienski
About the article
This blog post is an introductory material, demonstrating what a contract is, how preconditions and invariants can be derived from the contract, and how this process can help detect bugs. Two points stressed in this post are: (1) preconditions and invariants are not “contracts” and (2) only a subset of contract-related bugs can be detected through preconditions and invariants.
By Adrien Hamelin | Feb 2, 2021 02:47 PM | Tags: c++20
More tools for concurency safety.
Barriers and Atomic Smart Pointers in C++20
by Rainer Grimm
From the article:
In my last post, I introduced latches in C++20. A latch enables it threads to wait until a counter becomes zero. Additionally, to a latch, its big sibling barrier can be used more than once. Today, I write about barriers and present atomic smart pointers...
By Adrien Hamelin | Feb 2, 2021 02:37 PM | Tags: c++20
Making our lives easier.
std::jthread and cooperative cancellation with stop token
by Hitesh Kumar
From the article:
A std::jthread instance represents an automatically joining and cooperatively cancellable thread. std::jthread has an exception-safe thread termination flow compared to std::thread and can replace it in most situations with little or no code changes...
By Adrien Hamelin | Feb 2, 2021 02:29 PM | Tags: intermediate
What do you think?
Inheritance Without Pointers
by Jonathan Boccara
From the article:
Inheritance is a useful but controversial technique in C++. There is even a famous talk by Sean Parent called Inheritance is the base class of evil. So inheritance is not the most popular feature of the C++ community.
Nevertheless, inheritance is useful, and widely used by C++ developers.
What is the problem of inheritance? It has several problems, and one of them is that it forces us to manipulate objects through pointers...
By Meeting C++ | Feb 1, 2021 11:43 AM | Tags: meetingcpp community
THe monthly overview on upcoming User Group Meetings:
Online C++ User Group Meetings in February 2021
by Jens Weller
From the article:
The monthly overview of upcoming online C++ User Group meetings.
Tomorrow my Meeting C++ online Group meets to have a chat about C++ in Production! 17:00 CET!
By Blog Staff | Jan 25, 2021 01:57 PM | Tags: None
Solution just posted:
GotW #98 Solution: Assertion levels
by Herb Sutter
From the article:
This special Guru of the Week series focuses on contracts. We covered basic assertions in GotW #97... but not all asserted conditions are created equal.