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operator-(std::reverse_iterator)

From cppreference.com
 
C++
 
Iterator library
Iterator concepts
Iterator primitives
Algorithm concepts and utilities
Indirect callable concepts
Common algorithm requirements
(C++20)
(C++20)
(C++20)
Utilities
(C++20)
Iterator adaptors
Range access
(C++11)(C++14)
(C++14)(C++14)  
(C++11)(C++14)
(C++14)(C++14)  
(C++17)(C++20)
(C++17)
(C++17)
 
std::reverse_iterator
 
Defined in header <iterator>
template< class Iter1, class Iter2 >

typename reverse_iterator<Iter>::difference_type
    operator-( const reverse_iterator<Iter1>& lhs,

               const reverse_iterator<Iter2>& rhs );
 (until C++11)
template< class Iter1, class Iter2 >

auto operator-( const reverse_iterator<Iter1>& lhs,
                const reverse_iterator<Iter2>& rhs )

    -> decltype(rhs.base() - lhs.base());
 (since C++11)
(constexpr since C++17)

Returns the distance between two iterator adaptors.

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