Archive for category: C++20

C++20: An Infinite Data Stream with Coroutines

April 3, 2020

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My story to coroutines in C++20 goes on. Today I dive deep into the coroutines framework to create an…

C++20: More Details to Coroutines

March 27, 2020

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After I gave you in my last post (C++20: Coroutines - A First Overview) my first impression of coroutines,…

C++20: Coroutines – A First Overview

March 20, 2020

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C++20 provides four features that change how we think about and write modern C++: concepts, the ranges…

C++20: Python’s map Function

March 11, 2020

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Today, I finish my experiment writing beloved Python functions in C++. So far, I have implemented the…

C++20: Pythons range Function, the Second

March 6, 2020

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In my last post, C++20: Pythonic with the Ranges Library, I started my experiment to implement the beloved…

C++20: Pythonic with the Ranges Library

February 27, 2020

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Today, I start an experiment. I want to implement beloved functions in Python in C++ using the ranges…

C++20: Functional Patterns with the Ranges Library

February 17, 2020

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My last post C++20: The Ranges Library, gave you the first impression of the ranges library. Today's…

C++20: The Ranges Library

February 12, 2020

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Thanks to the ranges library in C++20, working with the Standard Template Library (STL) will become much…

TimelineCpp20Concepts

Concepts in C++20: An Evolution or a Revolution?

February 7, 2020

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Let me conclude my series to concepts with this meta-post. Are concepts an evolution or a revolution…

TimelineCpp20Concepts

C++20: Define the Concept Regular and SemiRegular

January 30, 2020

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When you want to define a concrete type that works well in the C++ ecosystem, you should define a type…

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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, […]
Reflection in C++26: MetafunctionsSeptember 30, 2024 - 10:14 am
Reflection offers many metafunctions that run at compile time. The metafunctions are declared as consteval. consteval creates a so-called immediate function. Each invocation of an immediate function creates a compile-time constant. To say it more directly. A consteval (immediate) function is executed at compile-time. Read more about consteval and constinit in my previous post: Two […]