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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. As an example, std.compat is not a submodule of std, but is named so to indicate the association the module bears to the std module (as a "compatibility ...
Since C++20, C++ supports import semantics via the header unit, that is, separate translation units synthesized from a header. [6] They are meant to be used alongside modules. The syntax used in that case is: export optional import header-name; Example:
This module implements {{Parameter names example}} (also known as {{Generic template demo}}). It creates a template demonstration such as that shown opposite. Please see the template page for full documentation.
In most of today's popular programming languages and operating systems, a computer program usually only has a single entry point.. In C, C++, D, Zig, Rust and Kotlin programs this is a function named main; in Java it is a static method named main (although the class must be specified at the invocation time), and in C# it is a static method named Main.
A hierarchy is recursive if the syntax for the namespace names is the same for each subdelegation. An example of a recursive hierarchy is the Domain name system. An example of a non-recursive hierarchy are Uniform Resource Name representing an Internet Assigned Numbers Authority (IANA) number.
The need for name mangling arises where a language allows different entities to be named with the same identifier as long as they occupy a different namespace (typically defined by a module, class, or explicit namespace directive) or have different type signatures (such as in function overloading).
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For the purposes of these tables, a, b, and c represent valid values (literals, values from variables, or return value), object names, or lvalues, as appropriate.R, S and T stand for any type(s), and K for a class type or enumerated type.