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And the Winners for the Seven Vouchers for Fedor’s Book “The Art of Writing Efficient Programs” are

November 23, 2021

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I'm happy to present the seven winners in this post including their answers. Strange Packt Behavior First,…

templatesTypeTraits

The Type-Traits Library: Type Checks

November 18, 2021

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The type-traits library is part of C++11 and supports type checks, type comparisons, and type modifications…

TemplateMetaprogramming

Template Metaprogramming – Hybrid Programming

November 12, 2021

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First of all, hybrid programming is not an official term. I created it to emphasize an exciting aspect…

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Seven Voucher for Fedor G. Pikus Book “The Art of Writing Efficient Programs”

November 7, 2021

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I'm happy to announce that I have to offer five vouchers for a digital and two vouchers for a printed…

TemplateMetaprogramming

Template Metaprogramming – How it Works

November 5, 2021

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In my last post, "Template Metaprogramming - How it All Started", I wrote about the roots of template…

TemplateMetaprogramming

Template Metaprogramming – How it All Started

October 26, 2021

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Metaprogramming is programming on programs. C++ applies metaprogramming at compile time. It started in…

AutomaticReturnType

Automatic Return Type (C++11/14/20)

October 21, 2021

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I started my discussion about the "Automatic Return Type (C++98)" in my last post. Today, I'm faced…

AutomaticReturnType

Automatic Return Type (C++98)

October 15, 2021

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Depending on the used C++ standard, there are different ways to return the correct return type of a function…

templates

Dependent Names

October 7, 2021

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A dependent name is essentially a name that depends on a template parameter. A dependent name can be…

templates

The Special Friendship of Templates

September 29, 2021

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A friend has unrestricted access to the members of a class. Consequently, friendship should be given…

templates

Visiting a std::variant with the Overload Pattern

September 23, 2021

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Typically, you use the overload pattern for a std::variant. std::variant is a type-safe union. A std::variant…

templates

Smart Tricks with Parameter Packs and Fold Expressions

September 16, 2021

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To complete my post about variadic templates and fold expressions, I present in this post smart tricks…

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 […]