Namespaces are commonly structured as hierarchies to allow reuse of names in different contexts. As an analogy, consider a system of naming of people where each person has a …

Jun 13, 2009 · A namespace provides a container to hold things like functions, classes and constants as a way to group them together logically and to help avoid conflicts with functions …

Aug 26, 2025 · In C++, extending a namespace means adding more features (like functions, variables, or classes) to an existing namespace, even if that namespace was defined …

Nov 7, 2025 · Namespace is a context for identifiers, a logical grouping of names used in a program. Within the same context and same scope, an identifier must uniquely identify an …

A namespace is a way to group related code together under a name. It helps you avoid naming conflicts when your code grows or when you use code from multiple sources.

Aug 14, 2024 · Namespace definitions are only allowed at namespace scope, including the global scope.

Jun 21, 2024 · A namespace is a declarative region that provides a scope to the identifiers (the names of types, functions, variables, etc) inside it. Namespaces are used to organize code …

Nov 9, 2025 · A namespace functions as an abstract container designed to partition and hold related programming elements, such as functions or variables. It does not physically hold data …

Once the namespace is declared, the scope resolution operator (::) can be used to refer to variables within the namespace. The following example shows how to refer to the function foo …

Feb 18, 2025 · In C++, any name that is not defined inside a class, function, or a namespace is considered to be part of an implicitly-defined namespace called the global namespace …