[namespace.alias] (original) (raw)

9 Declarations [dcl.dcl]

9.8 Namespaces [basic.namespace]

9.8.2 Namespace alias [namespace.alias]

The identifier in a namespace-alias-definition is a synonym for the name of the namespace denoted by thequalified-namespace-specifier and becomes anamespace-alias.

In a declarative region, a namespace-alias-definition can be used to redefine a namespace-alias declared in that declarative region to refer only to the namespace to which it already refers.

[ Example

:

The following declarations are well-formed:

namespace Company_with_very_long_name { /* ... */ } namespace CWVLN = Company_with_very_long_name; namespace CWVLN = Company_with_very_long_name; // OK: duplicate namespace CWVLN = CWVLN;

— end example

]