Archive for category: Blog

constexprIf

constexpr if

February 7, 2022

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In today's post, I want to introduce an exciting C++17 feature: constexpr if. constexpr if enables it…

constexpr

constexpr and consteval Functions in C++20

February 4, 2022

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With C++20, constexpr became way more powerful. Additionally, we have consteval functions in C++20…

RainerTalk

More Information about my Mentoring Program “Fundamentals for C++ Professionals”

February 4, 2022

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One month ago, I presented "My Mentoring Program "Fundamentals for C++ Professionals". I'm overwhelmed…

constexpr

constexpr Functions

January 26, 2022

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Today, I continue my story about programming at compile time. After template metaprogramming, the type-traits…

ConcurrencyCoverFrame

An Update of my Book “Concurrency with Modern C++”

January 20, 2022

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I am happy to announce. I updated my "Concurrency with Modern C++". This update includes a rework…

bundle

The New pdf Bundle is Ready: C++20 Concurreny – The Hidden Pearls

January 12, 2022

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

An illustration of the dining philosophers problem

Dining Philosophers Problem III

January 8, 2022

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This post ends the mini-series about the dining philosophers problem by Andre Adrian. Today, he applies…

An illustration of the dining philosophers problem

Dining Philosophers Problem II

January 8, 2022

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In the last post "Dining Philosophers Problem I", Andre Adrian started his analysis of the classical…

An illustration of the dining philosophers problem

Dining Philosophers Problem I

January 7, 2022

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At Christmas time, I had a few nice discussions with Andre Adrian. He solved the classical dining philosopher's…

mentoring

My Mentoring Program “Fundamentals for C++ Professionals”

December 31, 2021

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I'm happy to provide you with more details about my mentoring program, "Fundamentals for C++ Professionals". My…

Latest news

std::executionNovember 18, 2024 - 9:03 am
std::execution, previously known as executors or Senders/Receivers, provides “a Standard C++ framework for managing asynchronous execution on generic execution resources“. (P2300R10) Side Note Change of plans. My original plan was to present the C++26 library after the core language. However, the implementation status of the library is not good enough. Therefore, I decided to continue […]
C++26 Core Language: Small ImprovementsNovember 4, 2024 - 8:34 am
There are more small improvements in the C++26 language, which you should know. static_assert extension First, here’s the syntax of static_assert in C++11: static_assert(compile time predicate, unevaluated string) With C++26, the string can be a user-defined type having the following properties: static_assert can now be used with a format string. Here’s a nice example from […]
Placeholders and Extended Character SetOctober 28, 2024 - 10:19 am
Placeholders are a nice way to highlight variables that are no longer needed. Additionally, the character set of C++26 will be extended. Placeholders Structured bindings are a C++17 feature that allows you to bind multiple variables to the elements of a structured object. The following program demonstrates using tuples and structured bindings to return and […]
Contracts in C++26October 21, 2024 - 9:54 am
Contracts allow you to specify preconditions, postconditions, and invariants for functions. Contracts should already be part of C++20 but were removed in the standard meeting in Cologne. Here is what Herb Sutter said about contracts on Sutter’s Mill: “contracts is the most impactful feature of C++20 so far, and arguably the most impactful feature we […]
Reflection in C++26: Determine the LayoutOctober 14, 2024 - 9:42 am
Thanks to reflection, you can determine the layout of types. My examples are based on the reflection proposal P2996R5. Class Layout The following program determines the class layout of a few members. // classLayout.cpp #include <experimental/meta> #include <iostream> #include <utility> #include <vector> #include <array> struct member_descriptor { std::size_t offset; std::size_t size; bool operator==(member_descriptor const&) const […]
Reflection in C++26: Metafunctions for Enums and ClassesOctober 7, 2024 - 1:53 pm
Today, I continue my journey through reflection in C++26 and play with enums and classes. The names of the metafunctions to access an Enum or a Class member are often identical. Access the Members of an Enum The following program is based on one by Daveed Vandevoorde. Daveed is one of the fathers of reflection, […]