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breakingInvariant

Malicious Race Conditions and Data Races

May 22, 2017

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This post is about malicious race conditions and data races. Malicious race conditions are race conditions…

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Race Conditions versus Data Races

May 14, 2017

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Race conditions and data races are related but different concepts. Because they are related, they are…

C++17: Improved Associative Containers and Uniform Container Access

May 7, 2017

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C++11 has eight associative containers. With C++17, you can more comfortably insert new elements into…

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C++17: New Parallel Algorithms of the Standard Template Library

May 1, 2017

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The idea is quite simple. The Standard Template (STL) has more than 100 algorithms for searching, counting,…

RainerGrimmSmall

Get the Current Pdf Bundle: Concurrency with C++17 and C++20

April 26, 2017

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I have prepared the pdf bundle. To get it is quite simple. If you subscribe to the newsletter,…

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C++17 has a Visitor

April 23, 2017

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What have std::optional, std::any, and std::variant in common? You can construct them in place. But that…

RainerGrimmSmall

The Winners of the Next Pdf Bundles

April 20, 2017

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The winners of the next pdf bundles are. [En]: Concurrency with C++17 and C++20[De]: Funktionale…

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C++17 – Avoid Copying with std::string_view

April 16, 2017

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The purpose of std::string_view is to avoid copying data already owned by someone else and of which only…

RainerGrimmSmall

Which pdf bundle should I provide?

April 12, 2017

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Now, it's time to choose the next pdf bundle? You will get all posts, all source files, and a cmake file…

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C++17- std::byte and std::filesystem

April 10, 2017

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My post, C++17 - What's New in the Library, was fine for the first overview. Today, I will look deeper…

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C++17- More Details about the Core Language

April 4, 2017

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After I provided the big picture of the new C++17 core language in my post "C++17 - What's New in the…

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C++17 – What’s New in the Library?

March 31, 2017

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What's new in the library? A lot. To make the long story short. We get a std::string_view, parallel algorithm…

Latest news

The Problem with C++ Safety (Part 1): Why “It Works” Isn’t Good EnoughOctober 18, 2026 - 1:58 pm
Rainer Grimm’s blog continues. In this first article of a new series, Klaus Iglberger looks at why C++ is called memory unsafe and argues that the real problem isn’t the language itself, but how we write and teach it.
Small Safety Improvements in the C++ 26 Core LanguageSeptember 22, 2025 - 10:16 am
Safety is an important concern in C++26. Contracts are probably the most important feature for safety. But C++26 has much more to offer. Today, I would like to introduce three small but important improvements in C++26 that solve typical safety issues in C++. Disallow binding a returned reference to a temporary A safety issue can be […]
Contracts: Evaluation SemanticSeptember 8, 2025 - 9:49 am
After briefly presenting the details of contracts in my last article, “Contracts: A Deep Dive“, I would like to take a closer look at the very interesting Evaluation Semantic in today’s article. If a contract assertion occurs, one of the four evaluation semantics is applied: ignore, observe, enforce, or quick-enforce. The table provides an overview […]
Contracts: A Deep DiveAugust 25, 2025 - 9:35 am
I already introduced contracts in the article “Contracts in C++26”. In this article and the next ones, I will dive deeper into the details. In this article, I refer mainly to the excellent proposal “Contracts for C++”. Unfortunately, proposal P2900R14 exceeds 100 pages in length. I will therefore try to summarize the most important points […]
Data-Parallel Types: AlgorithmsAugust 11, 2025 - 8:45 am
The data-parallel types library has four special algorithms for SIMD vectors. The four special algorithms are min, max, minmax, and clamp. min, max, and minmax The two algorithms min and max have in common that they each accept two SIMD vectors and return a SIMD vector. This contains the element-wise minimum or maximum of the […]
Data-Parallel Types: ReductionJuly 28, 2025 - 10:10 am
In this article, I will discuss reduction and mask reduction for data-parallel types. Reduction A reduction reduces the SIMD vector to a single element. The library provides three functions for this purpose: reduce, hmin, and hmax.The following program shows how these functions are used. // reduction.cpp #include <array> #include <experimental/simd> #include <functional> #include <iostream> #include […]