Two new Keywords in C++20: consteval and constinit
With C++20, we get two new keywords: consteval and constinit. consteval produces a function executed at compile-time, and constinit guarantees that a variable is initialized at compile-time.
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Entries by Rainer Grimm
Designated Initializers
Designated initialization is an extension of aggregate initialization and empowers you to directly initialize the members of a class type using their names.
C++20: Optimized Comparison with the Spaceship Operator
In this post, I conclude my miniseries on the three-way comparison operator with a few subtle details. The subtle details include the compiler-generated == and != operators and the interplay of classical comparison operators, and the three-way comparison operator.
C++20: More Details to the Spaceship Operator
The compiler performs cleverly when it generates all six comparison operators. Ultimately, you get intuitive and efficient comparison operators for free. Let me dive into this post into the details of the spaceship operator.
C++20: The Three-Way Comparison Operator
The three-way comparison operator <=> is often just called the spaceship operator. The spaceship operator determines whether A < B, A = B, or A > B for two values, A and B. You can define the spaceship operator, or the compiler can auto-generate it.
C++20: Further Open Questions to Modules
So far, I have written in my last four posts the basics you should know about modules in C++20. Only a few questions about modules are still open. In this post, I address these open questions, such as templates in modules, the linkage of modules, and header units.
C++20: Structure Modules
When your module becomes bigger, you want to divide its functionality into manageable components. C++20 modules offer two approaches: submodules and partitions. Let me discuss both approaches in this post.
C++20: Module Interface Unit and Module Implementation Unit
Thanks to the module interface unit and implementation unit, you can separate the interface from the implementation when defining a module. Let me show you how.
C++20: A Simple math Module
Modules are one of the four prominent features of C++20. They overcome the restrictions of header files and promise a lot: faster build-times, fewer violations of the One-Definition-Rule, less usage of the preprocessor. Today, I want to create a simple math module.
Modernes C++ goes Worldwide
I’m happy to announce that I offer English and German online seminars.