operator<=(sequence_base<Seq1> const& a, Seq2 const& b)
{
return less_equal(a.derived(), b);
}
template <typename Seq1, typename Seq2>
operator<=(sequence_base<Seq1> const& a, Seq2 const& b)
{
return less_equal(a.derived(), b);
}
template <typename Seq1, typename Seq2>