How can I use boost :: adapters :: transform to create a range from a templated class and a vector?

I asked a question about using a lambda to achieve something like this earlier, but couldn't get it to work , so I tried to approach the problem using a functor instead. This is probably all the same in the sense that it is not related to object construction std::function

and is closer to the example case given in the documentation .

Here's a simple setup that illustrates my problem:

#include <boost/range/adaptor/transformed.hpp>
#include <vector>

// some structure
template <typename T>
struct MyStruct
{
    MyStruct(T t)
    {
    }
};

template <typename T>
struct Converter
{
    using return_type = MyStruct<T>;

    return_type operator()(const T& value)
    {
        return return_type(value);
    }
};

int main(int argc, const char* argv[])
{
    std::vector<int> vec {1, 2, 3};

    auto val = vec | boost::adaptors::transformed(Converter<int>());

    return 0;
}

      

        
        
        
      

    

When I try to compile this, I get the following error:

/home/user/packages/boost/mpl/eval_if.hpp:38:31: error: no type name specified 'Type in' boost::mpl::eval_if<boost::is_same<boost::use_default, boost::use_default>, boost::result_of<const Converter<int>(int&)>, boost::mpl::identity<boost::use_default> >::f_ {aka struct boost::result_of<const Converter<int>(int&)>}

I'm not sure what to do about it. I don't see any errors in the code. Any ideas?