operator-(std::reverse_iterator)
template< class Iterator >
typename reverse_iterator<Iterator>::difference_type
operator-( const reverse_iterator<Iterator>& lhs,
const reverse_iterator<Iterator>& rhs );
| | (until C++11) |
template< class Iterator1, class Iterator2 >
auto operator-( const reverse_iterator<Iterator1>& lhs,
const reverse_iterator<Iterator2>& rhs
) -> decltype(rhs.base() - lhs.base());
| | (since C++11)
(until C++17) |
template< class Iterator1, class Iterator2 >
constexpr auto operator-( const reverse_iterator<Iterator1>& lhs,
const reverse_iterator<Iterator2>& rhs
) -> decltype(rhs.base() - lhs.base());
| | (since C++17) |
Returns the distance between two iterator adaptors.
Parameters
| lhs, rhs | - | iterator adaptors to compute the difference of |
Return value
rhs.base() - lhs.base().
Example