Archive for category: Blog

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C++ Core Guidelines: Rules about Performance

March 23, 2018

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Before I write about the rules of performance, I will do a straightforward job. Accessing the elements…

RainerGrimmSmall

Which pdf bundle should I provide? Make your choice!

March 21, 2018

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Now, it's time to choose the next pdf bundle? You will get all posts, all source files, and a cmake file…

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C++ Core Guidelines: Rules about Statements and Arithmetic

March 16, 2018

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Today, I will write about the remaining rules to statements and the arithmetic rules. If you don't follow…

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C++ Core Guidelines: More about Control Structures

March 9, 2018

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My last German post C++ Core Guidelines: To Switch or not to Switch, that is the Question got…

hamlet

C++ Core Guidelines: To Switch or not to Switch, that is the Question

March 3, 2018

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First, I have to apologize. Today, I wanted to continue my journey through the C++ Core Guidelines with…

UnderConstruction

C++ Core Guidelines: Rules for Statements

February 23, 2018

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Before I continue with the roughly 15 rules for statements, let me finish the two rules for expressions.…

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C++ Core Guidelines: Rules about Don’ts

February 16, 2018

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This post is about don'ts. Here are this post's two most important rules: Don't use std::move thoughtless…

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C++ Core Guidelines: Rules for Conversions and Casts

February 9, 2018

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What has narrowing conversion and casts in common? They are often the source of errors; therefore, I…

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C++ Core Guidelines: More Rules for Expressions

February 3, 2018

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I know this post's headline is a bit boring: More Rules for Expressions. Honestly, this post is about…

Polynomial expansion

C++ Core Guidelines: Rules for Expressions

January 27, 2018

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Today's post is about expressions. You should avoid complicated expressions, know the precedence rules…

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, […]