Archive for category: Blog

timeline

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…

timeline

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…

timeline

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…

RainerGrimmSmall

How to get your pdf bundle?

March 28, 2017

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Now, I have prepared the pdf bundle to the C++ memory model/ Das C++ Speichermodell. To get it is quite…

timeline

C++17 – What’s New in the Core Language?

March 24, 2017

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C++11, C++14, and C++17. I guess you see the pattern. Later this year, we will get a new C++ standard.…

RainerGrimmSmall

And the Winners are: The C++ Memory Model/Das C++ Speichermodell

March 21, 2017

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That is easy. Both of you, the German and the English reader prefer the same pdf bundle: The C+ Memory…

conceptsDefinition

Defining Concepts

March 17, 2017

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I wrote a few posts about using concepts. Concepts are a named set of requirements. Let's define a few…

conceptsIntegralVariations

Placeholders – The Second

March 11, 2017

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The unification of templates, concepts, and placeholders goes on. This time, I will look closely at constrained…

slice

Concepts – Placeholders

March 5, 2017

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C++11 has auto unconstrained placeholders. You can use concepts in C++20 as constrained placeholders.…

ForkJoin

Task Blocks

March 3, 2017

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Task blocks use the well-known fork-join paradigm for the parallel execution of tasks. Who invented…

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, […]