Archive for category: Blog

override

override and final

November 3, 2016

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Using the context-sensitive keyword override and final, you can explicitly manage the overriding of virtual…

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Strongly-Typed Enums

November 1, 2016

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Enumerations are a convenient way to define integer constants with names. These integer constants are…

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Raw and Cooked

October 30, 2016

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C++11 has user-defined literals for characters, C strings, integers, and floating-point numbers. Integers…

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User-Defined Literals

October 28, 2016

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User-defined literals are a unique feature in all mainstream programming languages. They empower you…

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Published at Leanpub: The C++ Standard Library

October 25, 2016

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

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I’m proud to present: The C++ Standard Library

October 23, 2016

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The C++ Standard Library: All you have to know as a professional programmer about the C++ library. I'm…

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Compare and Modify Types

October 20, 2016

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The type-traits library empowers you to compare and modify types. All is done at compile time therefore,…

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Check Types

October 18, 2016

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Template Metaprogramming is programming at compile time. But what has template metaprogramming in common…

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More and More Save

October 15, 2016

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In the post Statically checked I wrote that the functions of the type-traits library are an ideal fit…

static assert

Statically Checked

October 14, 2016

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static_assert is the tool in modern C++ to make your code safe. static_assert The usage of static_assert…

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, […]