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About Rainer Grimm

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Entries by Rainer Grimm

C++20: Concepts – Syntactic Sugar

December 13, 2019/0 Comments/in C++20/by Rainer Grimm

Today, my post is not about something new to concepts. It’s about syntactic sugar. I write about abbreviated function templates. What? Abbreviated function templates allow a sweet way to define templates.

A Brief Overview of the PVS-Studio Static Code Analyzer

December 6, 2019/0 Comments/in News/by Rainer Grimm

During one of C++Russia conferences, I got acquainted with the team, developing the PVS-Studio code analyzer. Right now, I’d like to hand it over to them. They will make a small overview of this amazing tool, give a few useful links. In addition, they promised to provide you with a small bonus.

C++20: Concepts, the Placeholder Syntax

December 6, 2019/0 Comments/in C++20/by Rainer Grimm

Today, I have a simple answer to a challenging question: Where can I use my concept? Concepts can be used where auto is usable.

C++20: Concepts, the Details

November 29, 2019/0 Comments/in C++20/by Rainer Grimm

In my last post, C++20: Two Extremes and the Rescue with Concepts, I gave the first motivation for concepts. Concepts put semantic constraints on template parameters. Today, I present different use-cases for concepts in a compact form.

C++20: Two Extremes and the Rescue with Concepts

November 21, 2019/0 Comments/in C++20/by Rainer Grimm

I finished my overview of C++20 in the last post. Now, it’s time to dive into the details. What can be a better starting point for our journey than concepts?

C++20: Concurrency

October 29, 2019/0 Comments/in C++20/by Rainer Grimm

This post concludes my overview of C++20. Today’s post is about the concurrency features in the next C++ standard.

C++20: The Library

October 28, 2019/0 Comments/in C++20/by Rainer Grimm

My last post “C++20: The Core Language” presented the new features of the C++20 core language. Today, I continue my journey with an overview of the C++20 library.

C++ 20: The Core Language

October 27, 2019/0 Comments/in C++20/by Rainer Grimm

My last post C++20: The Big Four started with an overview of concepts, ranges, coroutines, and modules. Of course, C++20 has more to offer. Today, let’s continue my overview of the core language.

C++20: The Big Four

October 23, 2019/0 Comments/in C++20/by Rainer Grimm

This post presents you the big four: concepts, ranges, coroutines, and modules.

The new pdf bundle is ready: C++ Core Guidelines: Performance

October 23, 2019/0 Comments/in Pdf bundles/by Rainer Grimm

I have prepared the pdf bundle. To get it is quite simple.

Latest news

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 […]
Data-Parallel Types: simd_maskJuly 14, 2025 - 9:16 am
Thanks to simd_mask, conditional execution of operations on data-parallel types is possible. Unfortunately, in my last article, Data-Parallel Types – A First Example, I forgot to introduce one of the new library functions. I will make up for that in this article. Where Expression The new keyword where creates a so-called where expression. This allows […]
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 […]