Archive for category: Blog

TimelineCpp20CoreLanguage

constexpr std::vector and std::string in C++20

September 16, 2020

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Probably the most viral keyword in modern C++ is constexpr. With C++20, we have a constexpr std::vector…

TimelineCpp20CoreLanguage

std::span in C++20: Bounds-Safe Views for Sequences of Objects

September 8, 2020

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In my seminar, I often hear the question: How can I safely pass a plain array to a function? With C++20,…

FrontPage

And the Winners are:

September 6, 2020

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Last week, I launched a quiz. The price was it to win one of the five vouchers for the book "Modern…

FrontPage

Five Vouchers to win for the book “Modern C++ for Absolute Beginners”

August 28, 2020

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Is it possible to introduce C++ in 300 pages? Yes, it is. The book "Modern C++ for Absolute Beginners"…

TimelineCpp20CoreLanguage

volatile and Other Small Improvements in C++20

August 17, 2020

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Today, I complete my tour through the C++20 core language features with a few small improvements. One…

TimelineCpp20CoreLanguage

New Attributes with C++20

August 13, 2020

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With C++20, we got new and improved attributes such as [[nodiscard("reason")]], [[likely]], [[unlikely]],…

CompilerExlorer

Compiler Explorer, PVS-Studio, and Terrible Simple Bugs

August 12, 2020

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Do you know that PVS-Studio is integrated into the Compiler Explorer? If not, you should definitely read…

TimelineCpp20CoreLanguage

More Lambda Features with C++20

August 7, 2020

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Lambdas in C++20 can be default-constructed and support copy-assignment when they have no state. Lambdas…

cover20

The C++ Standard Library: The Third Edition includes C++20

August 6, 2020

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Just updated: The C++ Standard Library: What every professional C++ programmer should know about the…

TimelineCpp20CoreLanguage

More Powerful Lambdas with C++20

July 31, 2020

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Thanks to C++20, lambdas have become more powerful. From the various lambda improvements, template parameters…

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, […]