The following code
#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>
#include <deque>
#include <functional>
#define BEGIN_TO_END(container) container.begin(), container.end()
template <template<typename...> class OutputContainerType, class InContainer>
OutputContainerType<typename InContainer::value_type> convertContainer(const InContainer& in)
{
OutputContainerType<typename InContainer::value_type> result;
std::transform(BEGIN_TO_END(in), std::back_inserter(result), [](typename InContainer::value_type value) {return value;});
return result;
}
int main() {
std::deque<int> d {1, 2, 3};
const auto v = convertContainer<std::vector>(d);
std::cout << v.size() << std::endl;
}
works fine with GCC (link). However, it doesn't compile with MSVC 2013 (12.0) with the error: 'std::vector' : class has no constructors
(can be tested here, select 12.0 compiler version). What's the problem here, and how can I fix it?
The code:
#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>
#include <deque>
#include <functional>
#define BEGIN_TO_END(container) container.begin(), container.end()
template <template<typename T, typename T2> class OutputContainerType, class InContainer>
OutputContainerType<typename InContainer::value_type, std::allocator<typename InContainer::value_type>> convertContainer(const InContainer& in)
{
OutputContainerType<typename InContainer::value_type, std::allocator<typename InContainer::value_type>> result;
std::transform(BEGIN_TO_END(in), std::back_inserter(result), [](typename InContainer::value_type value) {return value;});
return result;
}
int main() {
std::deque<int> d {1, 2, 3};
const auto v = convertContainer<std::vector>(d);
std::cout << v.size() << std::endl;
}
Worked. The problem is then with variadic number of template parameters here...
EDITED: Actually not with the variadic number of template parameters as I can even compile it with the
template <template<typename...> class OutputContainerType, class InContainer>
so the MSVC compiler needs explicitly given each type of the template.
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