Namespace aliases

Namespace aliases allow the programmer to define an alternate name for a namespace.

They are commonly used as a convenient shortcut for long or deeply-nested namespaces.

Syntax

Explanation

The new alias alias_name provides an alternate method of accessing ns_name .

alias_name must be a name not previously used. alias_name is valid for the duration of the scope in which it is introduced.

Keywords

namespace

Example

#include <iostream>
namespace foo
{
    namespace bar
    {
         namespace baz
         {
             int qux = 42;
         }
    }
}
namespace fbz = foo::bar::baz;
int main()
{
    std::cout << fbz::qux << '\n';
}

42

See also