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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 into logical groups and to prevent name collisions that can occur especially when your code base includes multiple libraries.

But namespaces, unlike classes, do not require instantiation; you do not need an object to use a specific namespace. You only need to prefix the function you wish to call with namespace_name:: -- similar to how you would call a static member function of a class.

Namespaces are a TypeScript-specific way to organize code. Namespaces are simply named JavaScript objects in the global namespace. This makes namespaces a very simple construct to use. Unlike modules, they can span multiple files, and can be concatenated using outFile .

It is a convention to use XSD or XS as a prefix for the XML Schema namespace, but that decision is purely personal. One can choose to use a prefix ABC for the XML Schema namespace, which is legal, but doesn't make much sense. Using meaningful namespace prefixes add clarity to the XML document.

Standard Namespace The std is a short form of standard, the std namespace contains the built-in classes and declared functions. You can find all the standard types and functions in the C++ "std" namespace.

When using prefixes in XML, a namespace for the prefix must be defined. The namespace can be defined by an xmlns attribute in the start tag of an element. The namespace declaration has the following syntax. xmlns:prefix="URI".

You only need to prefix the function you wish to call with namespace_name:: -- similar to how you would call a static member function of a class. Another convenience of namespaces is that they allow you to use the same function name, when it makes sense to do so, to perform multiple different actions.

Prominent examples for namespaces include file systems, which assign names to files. Some programming languages organize their variables and subroutines in namespaces. Computer networks and distributed systems assign names to resources, such as computers, printers, websites, and remote files.