C++ Aliasing a long namespace


Example

This is usually used for renaming or shortening long namespace references such referring to components of a library.

namespace boost
{
    namespace multiprecision
    {
        class Number ...
    }
}

namespace Name1 = boost::multiprecision;


//    Both Type declarations are equivalent
boost::multiprecision::Number X   //    Writing the full namespace path, longer
Name1::Number Y                   //    using the name alias, shorter