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.
| lhs, rhs | - | iterator adaptors to compute the difference of |
rhs.base() - lhs.base().
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