Archive for category: Blog

patterns

The Adapter Pattern

October 9, 2022

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The idea of the adapter pattern is straightforward: It converts the interface of a class into another…

TemplateMetaprogrammingMarius

Five Coupons for the eBook “Template Metaprogramming with C++”

October 5, 2022

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I'm happy to announce that I have five giveaway eBooks for "Template Metaprogramming with C++" by Marius…

CreationalPatterns

The Singleton: The Alternatives Monostate Pattern and Dependency Injection

October 2, 2022

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So far, I have discussed in my previous posts the Singleton Pattern, and its pros and cons. One question…

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Concepts and the Finance Industry

September 30, 2022

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The finance industry is a big user of C++. But as everyone knows, C++ programmers take on a substantial…

CreationalPatterns

The Singleton: Pros and Cons

September 25, 2022

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I introduced in my last post "The Singleton", the classical Singleton and the so-called Meyers Singleton.…

CreationalPatterns

The Singleton

September 19, 2022

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The most controversial Design Pattern from the book "Design Patterns: Elements of Reusable Object-Oriented…

CreationalPatterns

The Factory Method (Slicing and Ownership Semantics)

September 12, 2022

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In the last installment of this blog, I introduced the Factory Method: Creational Patterns: Factory Method…

RainerGrimm freigestellt 875x1480

Stop Training, Start Mentoring

September 8, 2022

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Training and mentoring aim one goal: to improve your skills in a well-defined way. Although both aim…

CreationalPatterns

The Factory Method

September 4, 2022

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The classic book "Design Patterns: Elements of Reusable Object-Oriented Software" has 23 patterns. They…

AntiPatterns

Anti-Patterns

August 29, 2022

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An anti-pattern is a proven way to shoot yourself into your foot. The term anti-pattern was coined by…

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, […]