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resize functionality moved to a functor to support partial templ. spec.

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Toon Knapen
2004-08-18 14:51:33 +00:00
parent 28c03cf816
commit d2e1cdb681
1 changed files with 16 additions and 7 deletions
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23
include/boost/numeric/ublas/vector.hpp
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@@ -30,17 +30,26 @@ namespace boost { namespace numeric { namespace ublas {
namespace detail {
using namespace boost::numeric::ublas;
template <class T>
struct resize_functor {
void operator() (T& a, typename T::size_type size, bool preserve) const {
a.resize (size, preserve);
}
};
// Specialise for std::vector
template <class T>
struct resize_functor< std::vector<T> > {
void operator() (std::vector<T>& a, typename std::vector<T>::size_type size, bool ) const {
a.resize (size);
}
};
// Resizing helpers, allow preserve parameter to be used where possible
template<class T>
BOOST_UBLAS_INLINE
void resize (T& a, typename T::size_type size, bool preserve) {
a.resize (size, preserve);
}
// Specialise for std::vector
template<class T>
BOOST_UBLAS_INLINE
void resize (std::vector<T> &a, typename std::vector<T>::size_type size, bool /* preserve */) {
a.resize (size);
resize_functor<T>() (a, size, preserve);
}
}