Archive for category: C++20

The Ranges Library in C++20: Design Choices

October 30, 2023

Thanks to the ranges library, working with the Standard Template Library (STL) is much more comfortable…

C++20: More Details about Module Support of the Big Three

October 23, 2023

In my last post, "C++20: Module Support of the Big Three", I compiled a simple module with the Big Three.…

C++20: Module Support of the Big Three

October 16, 2023

I have written almost 100 posts about C++20 in the last four years, but I'm not done. This post continues…

Improved Iterators with Ranges

June 9, 2022

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There are more reasons to prefer ranges library above the classical Standard Template Library. The ranges…

Sentinels and Concepts with Ranges Algorithms

May 31, 2022

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The ranges library in C++20 supports sentinels. Sentinels stand for the end of a range and can be regarded…

Projections with Ranges

May 25, 2022

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The algorithms of the ranges library are lazy, can work directly on the container, and can easily be…

The Ranges Library in C++20: More Details

May 19, 2022

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Working with the Standard Template Library (STL) is much more comfortable and powerful thanks to the…

TimelineCpp20Concepts

Check Types with Concepts

May 12, 2022

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Concepts are a powerful and elegant tool to check at compile time if a type fulfills. Thanks to static_assert,…

TimelineCpp20Concepts

Check Types with Concepts – The Motivation

May 5, 2022

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static_assert allows you to check at compile time if a type T fulfills the Concept: static_assert(Concept<T>). Before…

TimelineCpp20Concepts

Using Requires Expression in C++20 as a Standalone Feature

April 27, 2022

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In my last post "Defining Concepts with Requires Expressions", I exemplified how you can use requires…

Latest news

C++20: Query Calendar Dates and Ordinal DatesApril 22, 2024 - 9:53 am
The extended chrono library makes it relatively easy to ask for the time duration between calendar dates. This post is the sixth in my detailed journey through the chrono extension in C++20: Query Calendar Dates Without further ado, the following program queryCalendarDates.cpp queries a few calendar dates. // queryCalendarDates.cpp #include <chrono> #include <iostream> int main() […]
C++20: Displaying and Checking Calendar DatesApril 15, 2024 - 9:20 am
I created calendar dates in my last post, “C++20: Creating Calendar Dates,” and I will display and check them today. This post is the fifth in my detailed journey through the chrono extension in C++20: Displaying Calendar Dates Thanks to std::chrono::local_days or std::chrono::sys_days, you can convert calendar dates to a local or a system std::chrono::time_point. […]
C++20: Creating Calendar DatesApril 8, 2024 - 10:51 am
In this post, I will dive deeper into calendar dates and create them. If this post is too overwhelming for you, read my previous ones: C++20 supports constants and literals to make using calendar-date types more convenient. Constants and Literals for Calendar Types Let me start with the constants for std::chrono::weekday, and std::chrono::month. std::chrono::Monday std::chrono::Thuesday […]
C++20: Time of DayMarch 25, 2024 - 10:08 am
This new data type std::chrono::hh_mm_ss in C++20 stands for the time of day. Time of Day std::chrono::hh_mm_ss is the duration since midnight split into hours, minutes, seconds, and fractional seconds. This type is typically used as a formatting tool. First, the following table gives you a concise overview of std::chrono::hh_mm_ss instance tOfDay. Depending on the […]
C++20: Basic Chrono Terminology with Time Duration and Time PointMarch 18, 2024 - 10:34 am
Today, I continue my journey through the basic types with time durations and time points. Time Durations C++14 introduced helper types such as std::chrono::seconds for time durations and corresponding time literals such as 5s. C++20 added new helper types. The following table shows all for completeness. Often the time duration std::chrono::days and the calendar date […]
My Next Mentoring Program: “Concurrency with Modern C++” startsMarch 11, 2024 - 11:24 am
My next mentoring program, “Concurrency with Modern C++”, starts on the 15th of March. Registration is open.