.. title:: clang-tidy - modernize-concat-nested-namespaces
modernize-concat-nested-namespaces
==================================
Checks for use of nested namespaces such as ``namespace a { namespace b { ... } }``
and suggests changing to the more concise syntax introduced in C++17: ``namespace a::b { ... }``.
Inline namespaces are not modified.
For example:
.. code-block:: c++
namespace n1 {
namespace n2 {
void t();
}
}
namespace n3 {
namespace n4 {
namespace n5 {
void t();
}
}
namespace n6 {
namespace n7 {
void t();
}
}
}
// in c++20
namespace n8 {
inline namespace n9 {
void t();
}
}
Will be modified to:
.. code-block:: c++
namespace n1::n2 {
void t();
}
namespace n3 {
namespace n4::n5 {
void t();
}
namespace n6::n7 {
void t();
}
}
// in c++20
namespace n8::inline n9 {
void t();
}