Nested namespace in C++

[Pallav singh]

Hi All,

whats the usage of having nested namespace in c++ ?

Thanks
Pallav Singh

 

[Juha Nieminen]

whats the usage of having nested namespace in c++ ?

The same as having inner classes and types? Organization and minimizing
global namespace pollution.

 

[Qi]

whats the usage of having nested namespace in c++ ?

IMHO, nested namespace is not as useful as sub package in Java.
Maybe due to usually Java IDEs have good support to auto complete
for sub packages.

I personally prefer one top namespace only.

However, I think nested namespace is useful for internal
and private implementation.
A nested namespace "_internal" implicit that the user should
not use it.
Boost library uses lots of nested namespace for that purpose.