Archive for category: C++ Core Guidelines

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C++ Core Guidelines: Rules for Templates and Generic Programming

August 31, 2018

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I this post I give an introduction to the rules for generic programming in C++. Generic programming is,…

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C++ Core Guidelines: Rules for Constants and Immutability

August 22, 2018

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Making objects or methods const has two benefits. First, the compiler will complain when you break the…

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C++ Core Gudelines: goto considered Evil

August 17, 2018

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If you can't throw an exception and can't use final_action (finally) from the guideline support library,…

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C++ Core Guidelines: finally in C++

August 10, 2018

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To make my point clear, this post is about the exceptional case that you can not throw an exception.…

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C++ Core Guidelines: Rules about Exception Handling

August 1, 2018

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Today's post is about the right way to throw and catch exceptions. This means when you should throw and…

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C++ Core Guidelines: The noexcept Specifier and Operator

July 24, 2018

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If you skim the remaining rules to error handling, you often read the word noexcept. Before I write…

Design by contract

C++ Core Guidelines: A Short Detour to Contracts in C++20

July 20, 2018

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My original plan was it to write in this post about the next rules to error handling. But I changed my…

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C++ Core Guidelines: Rules for Error Handling

July 12, 2018

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Error handling is an essential part of writing good software; therefore, the C++ core guidelines have…

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C++ Core Guidelines: The Remaining Rules about Lock-Free Programming

July 6, 2018

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Today, I will finish my story on concurrency and lock-free programming. There are four rules to lock-free…

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C++ Core Guidelines: The Resolution of the Riddle

June 27, 2018

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Today, I will solve the riddle from my last post. Thanks to my readers, the analysis of the ABA problem…

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, […]