[namespace.alias] (original) (raw)
9 Declarations [dcl]
9.9 Namespaces [basic.namespace]
9.9.3 Namespace alias [namespace.alias]
A namespace-alias-definition declares an alternate name for a namespace according to the following grammar:
namespace-alias-definition:
namespace identifier = qualified-namespace-specifier ;
qualified-namespace-specifier:
nested-name-specifier namespace-name
The identifier in a namespace-alias-definitionbecomes a namespace-alias and denotes the namespace denoted by thequalified-namespace-specifier.
[Note 1:
When looking up a namespace-name in anamespace-alias-definition, only namespace names are considered, see [basic.lookup.udir].
— _end note_]