Archive for category: C++ Core Guidelines

Observer

C++ Core Guidelines: Class Rules

August 18, 2017

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A class is a user-defined type where the programmer can specify the representation, the operations, and…

cogs

C++ Core Guidelines: Semantic of Function Parameters and Return Values

August 11, 2017

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Today, I conclude my treatise about the rules for functions in the C++ core guidelines. The last…

FunctionParameters

C++ Core Guidelines: The Rules for in, out, in-out, consume, and forward Function Parameter

August 4, 2017

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You have many choices to pass function parameters. You can pass by value or by reference. A reference…

cogs

C++ Core Guidelines: Function Definitions

July 29, 2017

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Functions are the "fundamental building block of programs." and "the most critical part in most…

support

C++ Core Guideline: The Guideline Support Library

July 21, 2017

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The guidelines support library (GSL) is a small library for supporting the guidelines of the C++ core…

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C++ Core Guidelines: Interfaces II

July 8, 2017

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Interfaces are a contract between a service provider and a service consumer. The C++ Core Guidelines…

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C++ Core Guidelines: Interfaces I

July 7, 2017

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Interfaces are a contract between a service provider and a service consumer. The C++ Core Guidelines…

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C++ Core Guidelines: The Philosophy

June 30, 2017

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Today, I will dig deeper into the C++ Core Guidelines. I wrote about the Introduction section in my last…

ZenOfPython

Why do we need Guidelines for Modern C++?

June 18, 2017

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This subjective post is based on more than 15 years of experience as a trainer for C++, Python, and software…

timeline

What is Modern C++?

June 16, 2017

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We often speak about classical and modern C++. What does that mean? First of all: What is modern C++?…

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, […]