Question

lets say i have a templated class

template <typename T>
struct Widget
{
   //generalized implementation
}

but i wanted to totally specialize..
for a template that accepted a parameter?

template <>
struct Widget< TemplateThatAcceptsParameter<N> >
{
       //implementation for Widget for TemplateThatAcceptsParameterN 
       //which takes parameter N
}

How does one go about doing this?

Answer 1

This is called a partial specialization and can be coded like this:

template <typename T>
struct Widget
{
   //generalized implementation
};

template <typename N>
struct Widget< TemplateThatAcceptsParameter<N> >
{
   //implementation for Widget for TemplateThatAcceptsParameterN 
   //which takes parameter N
};

It works just like a regular specialization, but has an extra template argument.