9
Declarations
[dcl]
9.9
Namespaces
[basic.namespace]
9.9.3
Namespace alias
[namespace.alias]
1
#
A
namespace-alias-definition
declares a
namespace alias
according to the following grammar:
namespace-alias
:
identifier
namespace-alias-definition
:
namespace
identifier
=
qualified-namespace-specifier
;
namespace
identifier
=
splice-specifier
;
qualified-namespace-specifier
:
nested-name-specifier
o
p
t
namespace-name
2
#
The
splice-specifier
(if any) shall designate a namespace that is not the global namespace
.
3
#
The
identifier
in a
namespace-alias-definition
becomes a
namespace-alias
.
4
#
The underlying entity (
[basic.
pre]
) of the namespace alias is the namespace either denoted by the
qualified-namespace-specifier
or designated by the
splice-specifier
.
[
Note
1
:
When looking up a
namespace-name
in a
namespace-alias-definition
, only namespace names are considered, see
[basic.
lookup.
udir]
.
—
end note
]