arma_traits.hpp

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#ifndef MLPACK_CORE_UTIL_ARMA_TRAITS_HPP
#define MLPACK_CORE_UTIL_ARMA_TRAITS_HPP

// Structs have public members by default (that's why they are chosen over
// classes).

template<typename VecType>
struct IsVector
{
  const static bool value = false;
};

// Commenting out the first template per case, because
//Visual Studio doesn't like this instantiaion pattern (error C2910).
//template<>
template<typename eT>
struct IsVector<arma::Col<eT> >
{
  const static bool value = true;
};

//template<>
template<typename eT>
struct IsVector<arma::SpCol<eT> >
{
  const static bool value = true;
};

//template<>
template<typename eT>
struct IsVector<arma::Row<eT> >
{
  const static bool value = true;
};

//template<>
template<typename eT>
struct IsVector<arma::SpRow<eT> >
{
  const static bool value = true;
};

//template<>
template<typename eT>
struct IsVector<arma::subview_col<eT> >
{
  const static bool value = true;
};

//template<>
template<typename eT>
struct IsVector<arma::subview_row<eT> >
{
  const static bool value = true;
};

// I'm not so sure about this one.  An SpSubview object can be a row or column,
// but it can also be a matrix subview.

//template<>
template<typename eT>
struct IsVector<arma::SpSubview<eT> >
{
  const static bool value = true;
};

#endif