How can I check if a type is an instantiation of a given class template? [duplicate]

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I came up with the following solution, using C++11 variadic templates and simple partial specialization:

#include <type_traits>

template < template <typename...> class Template, typename T >
struct is_instantiation_of : std::false_type {};

template < template <typename...> class Template, typename... Args >
struct is_instantiation_of< Template, Template<Args...> > : std::true_type {};

It could be adapted to C++03 by using the preprocessor to generate versions for a varying number of template parameters, but there is maybe a simpler way.

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