Archive for category: Blog

Time Zones: Online Classes

May 13, 2024

Today, I will continue to present the functionality of the time zones of the C++20 chrono extension. This…

TimelineCpp20CoreLanguage

Time Zones: Details

May 6, 2024

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Today, I present the time-zones functionality of the C++20 extension. This post is the seventh…

C++20: Query Calendar Dates and Ordinal Dates

April 22, 2024

The extended chrono library makes it relatively easy to ask for the time duration between calendar dates. This…

C++20: Displaying and Checking Calendar Dates

April 15, 2024

I created calendar dates in my last post, "C++20: Creating Calendar Dates," and I will display and check…

C++20: Creating Calendar Dates

April 8, 2024

In this post, I will dive deeper into calendar dates and create them. If this post is too overwhelming…

C++20: Time of Day

March 25, 2024

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…

C++20: Basic Chrono Terminology with Time Duration and Time Point

March 18, 2024

Today, I continue my journey through the basic types with time durations and time points. Time…

My Next Mentoring Program: “Concurrency with Modern C++” starts

March 11, 2024

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My next mentoring program, "Concurrency with Modern C++", starts on the 15th of March. Registration is…

C++20: Basic Chrono Terminology

March 4, 2024

To get the most out of the chrono extension in C++20, a basic understanding of the chrono terminology…

More Details to Formatting User-Defined Types in C++20

February 26, 2024

Implementing a formatter for a user-defined type having more than one value in C++20 is challenging.…

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, […]