constexpr operator std::pair<X, Y>() const
{
return {begin(), end()};
}
constexpr bool empty() const
{
return begin() == end();
}
iterator begin()
{ return base_.begin(); }
iterator_range &operator=(iterator_range<X, Y> rng)
{
begin() = detail::move(rng).begin();
end() = detail::move(rng).end();
return *this;
}
void sort()
{ std::stable_sort( base_.begin(), base_.end(), comparator() ); }
std::pair< const_iterator, const_iterator > equal_range( key_type const& k) const
{
return std::equal_range(
base_.begin(), base_.end(),
k, comparator() );
}
const_iterator upper_bound( key_type const& k) const
{
return std::upper_bound(
base_.begin(), base_.end(),
k, comparator() );
}
iterator lower_bound( key_type const& k)
{
return std::lower_bound(
base_.begin(), base_.end(),
k, comparator() );
}
const_iterator begin() const
{ return base_.begin(); }