how to get the type of a deferred template parameter
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by smerlin
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Published on 2010-06-17T06:26:06Z
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2010/06/17
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Is there a way to get the defered type of a class template parameter ?
template <class TPtr>
struct foo {
typedef TPtr ptr_type;
typedef ??? element_type; /* shall be the type of a deferred TPtr*/
};
so foo<const char*>::element_type results in const char, and foo<std::vector<int>::iterator_type>::element_type results in int.
i am aware of that i can use the value_type typedef for c++ iterators (like std::vector<int>::iterator_type::value_type), but raw pointers havent got a value_type typedef, so i am out of luck there.
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