Archive for category: C++ Core Guidelines

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C++ Core Guidelines: Naming and Layout Rules

October 10, 2019

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The C++ core guidelines have about twenty naming and layout rules. A few of them are obvious; a few of…

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C++ Core Guidelines: Lifetime Safety And Checking the Rules

October 1, 2019

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The lifetime safety profile in the C++ core guidelines boils down to one issue: don't dereference a possible…

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C++ Core Guidelines: Bounds Safety

September 26, 2019

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Today's post concerns the second C++ Core Guidelines: Bounds Safety profile. The goal of the profile…

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C++ Core Guidelines: Type Safety by Design

September 18, 2019

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What does that mean: type safety by design. Type safety by design just means that you always initialize…

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C++ Core Guidelines: Type Safety

September 8, 2019

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The C++ core guidelines support three profiles: type safety, bounds safety, and lifetime safety. Thanks…

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C++ Core Guidelines: Profiles

September 6, 2019

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Informally, profiles are a subset of rules of the C++ core guidelines for specific concerns such as type…

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More Myths of My Blog Readers

August 30, 2019

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Today, I conclude my story to your myths about C++. These myths are around function parameters, the initialisation…

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Myths of My Blog Readers

August 22, 2019

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I was inquisitive about your C++ myths. In particular, my German readers were quite active. I got a few…

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C++ Core Guidelines: More Non-Rules and Myths

August 16, 2019

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Demystifying non-rules and myths in C++ is a laborious but essential job. The goal is simple: use the…

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C++ Core Guidelines: Non-Rules and Myths

August 8, 2019

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Of course, you already know many non-rules and myths about C++. Non-rules and myths which we have to…

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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, […]