Blog

TimelineCpp20CoreLanguage

C++20: Extend std::format for User-Defined Types

October 11, 2020

/

Peter Gottschling presented in his last post "std::format in C++20" the basics of the new formatting…

TimelineCpp20CoreLanguage

std::format in C++20

October 2, 2020

/

Today, I'm happy to present Peter Gottschling's guest post to the new formatting library in C++20: std::format.…

TimelineCpp20CoreLanguage

More Convenience Functions for Containers with C++20

September 24, 2020

/

Removing elements from a container or asking if an associative container has a specific key is too complicated.…

TimelineCpp20CoreLanguage

constexpr std::vector and std::string in C++20

September 16, 2020

/

Probably the most viral keyword in modern C++ is constexpr. With C++20, we have a constexpr std::vector…

TimelineCpp20CoreLanguage

std::span in C++20: Bounds-Safe Views for Sequences of Objects

September 8, 2020

/

In my seminar, I often hear the question: How can I safely pass a plain array to a function? With C++20,…

FrontPage

And the Winners are:

September 6, 2020

/

Last week, I launched a quiz. The price was it to win one of the five vouchers for the book "Modern…

FrontPage

Five Vouchers to win for the book “Modern C++ for Absolute Beginners”

August 28, 2020

/

Is it possible to introduce C++ in 300 pages? Yes, it is. The book "Modern C++ for Absolute Beginners"…

TimelineCpp20CoreLanguage

volatile and Other Small Improvements in C++20

August 17, 2020

/

Today, I complete my tour through the C++20 core language features with a few small improvements. One…

TimelineCpp20CoreLanguage

New Attributes with C++20

August 13, 2020

/

With C++20, we got new and improved attributes such as [[nodiscard("reason")]], [[likely]], [[unlikely]],…

CompilerExlorer

Compiler Explorer, PVS-Studio, and Terrible Simple Bugs

August 12, 2020

/

Do you know that PVS-Studio is integrated into the Compiler Explorer? If not, you should definitely read…

TimelineCpp20CoreLanguage

More Lambda Features with C++20

August 7, 2020

/

Lambdas in C++20 can be default-constructed and support copy-assignment when they have no state. Lambdas…

cover20

The C++ Standard Library: The Third Edition includes C++20

August 6, 2020

/

Just updated: The C++ Standard Library: What every professional C++ programmer should know about the…

Latest news

Data-Parallel Types – A First ExampleJune 25, 2025 - 4:01 pm
After providing a theoretical introduction to the new C++ 26 feature in my last article, “Data-Parallel Types (SIMD),” I would like to follow up today with a practical example. The following introductory example is from the experimental implementation of the SIMD library. This functionality has been fully adopted in the C++ 26 draft under the […]
Data-Parallel Types (SIMD)June 16, 2025 - 10:24 am
The data-parallel types (SIMD) library provides data-parallel types and operations on them. Today, I want to take a closer look at this. Before diving into the new library, I would like to take a moment to discuss SIMD. SIMD Vectorization refers to the SIMD (Single Instruction, Multiple Data) extensions of a modern processor’s instruction set. […]
Read-copy-update (RCU)June 2, 2025 - 9:54 am
Read-copy-update is strong in multithreading environments where a data structure is read almost exclusively but rarely written. First of all, what is RCU? The excellent Wikipedia page on Read-copy-update provides a good introduction: In computer science, read-copy-update (RCU) is a synchronization mechanism that avoids the use of lock primitives while multiple threads concurrently read and […]
atomic<shared_ptr<>> by Oliver SchädlichMay 19, 2025 - 9:11 am
This blog article is an experiment. A few days ago, I received the following email (translated from German) from Oliver Schädlich (oliver.schaedlich@gmail.com). If, as I hope, this article sparks a discussion, I will be happy to summarize it in my last article. Please send an email to: Rainer.Grimm@ModernesCpp.de. I just read your latest article on […]
Hazard Pointers in C++26May 5, 2025 - 11:12 am
Hazard pointers provide garbage collection in C++ and solve the ABA problem. First of all. What is a hazard pointer? Proposal P2530R3 gives a nice explanation: A hazard pointer is a single-writer multi-reader pointer that can be owned by at most one thread at any time. Only the owner of the hazard pointer can set […]
A Lock-Free Stack: A Hazard Pointer Implementation Explained IIApril 7, 2025 - 11:11 am
In my last post, I started to explain a hazard pointer implementation: A Lock-Free Stack: A Hazard Pointer Implementation Explained I. Today, I will continue to explain the implementation. The Retire List The retire list has the public member functions isInUse, addNode, and deleteUnusedNodes. Additionally, it has the inner class RetireNode, an atomic member of […]