Flexibility of template alias in C++0x

Question

As I understand, template aliases in C++0x will allow us to do the following:

template 
using Dictionary = std::map< std::string, T >;

D         


        

Answer 1

The syntax is:

template 
using ValueType = typename std::iterator_traits::value_type;

as with your second one.

Source: http://www2.research.att.com/~bs/C++0xFAQ.html#template-alias

Their example is:

template
    using int_exact = typename int_exact_traits::type;  // define alias for convenient notation