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Like Java's packages, C++ modules do not have a hierarchical system, but typically use a hierarchical naming convention. In other words, C++ does not have "submodules", meaning the . symbol which may be included in a module name bears no syntactic meaning and is used only to suggest the association of a module.
The term assembly (as in .NET languages like C#, F# or Visual Basic .NET) or package (as in Dart, Go or Java) is sometimes used instead of module.In other implementations, these are distinct concepts; in Python a package is a collection of modules, while in Java 9 the introduction of the new module concept (a collection of packages with enhanced access control) was implemented.
A module must have an initializer function that is equivalent to, or complementary to an object constructor method. This feature is not supported by regular namespaces. A module must have a finalizer function that is equivalent to, or complementary to an object destructor method. This feature is not supported by regular namespaces.
On Microsoft Windows, the core system dynamic libraries provide an implementation of the C standard library for the Microsoft Visual C++ compiler v6.0; the C standard library for newer versions of the Microsoft Visual C++ compiler is provided by each compiler individually, as well as redistributable packages. Compiled applications written in C ...
Translation units define a scope, roughly file scope, and functioning similarly to module scope; in C terminology this is referred to as internal linkage, which is one of the two forms of linkage in C. Names (functions and variables) declared outside of a function block may be visible either only within a given translation unit, in which case they are said to have internal linkage – they are ...
C++23 is the name for the version of the International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC) 14882 standard for the C++ programming language that follows C++20. The final draft of this version is N4950.
C++20 is a version of the ISO/IEC 14882 standard for the ... three-way comparison using the "spaceship ... including new import and module. New attributes in C++20: ...
Microsoft therefore recommends against using C++ interfaces at module boundaries when one wants to enable client code compiled using a different compiler version. Instead of C++, Microsoft recommends using C [ 56 ] or COM [ 57 ] interfaces, which are designed to have a stable ABI between compiler releases.