N4026: Nested namespace definition – Robert Kawulak
A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.
Document number: N4026
Date: 2014-05-23
Nested namespace definition
by Robert Kawulak
Excerpt:
The paper proposes allowing the use of a qualified name in a namespace definition to define several nested namespaces at once, for example:
- namespace A::B::C {
- //...
- }
The code above would be equivalent to:
- namespace A {
- namespace B {
- namespace C {
- //...
- }
- }
- }
The feature was already proposed by Jon Jagger in 2003 in the paper N1524 Nested Namespace Definition Proposal, but it has been listed in N2869 State of C++ Evolution (Post San Francisco 2008) under “Not ready for C++0x, but open to resubmit in future”.
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