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std::reverse_iterator<Iter>::reverse_iterator

	(1)
reverse_iterator();		(until C++17)
constexpr reverse_iterator();		(since C++17)
	(2)
explicit reverse_iterator( iterator_type x );		(until C++17)
constexpr explicit reverse_iterator( iterator_type x );		(since C++17)
	(3)
template< class U > reverse_iterator( const reverse_iterator<U>& other );		(until C++17)
template< class U > constexpr reverse_iterator( const reverse_iterator<U>& other );		(since C++17)

Constructs a new iterator adaptor.

1) Default constructor. The underlying iterator is value-initialized. Operations on the resulting iterator have defined behavior if and only if the corresponding operations on a value-initialized Iter also have defined behavior.

2) The underlying iterator is initialized with x.

3) The underlying iterator is initialized with that of other. This overload participates in overload resolution only if U is not the same type as Iter and std::convertible_to<const U&, Iter> is modeled(since C++20).

Parameters

x	-	iterator to adapt
other	-	iterator adaptor to copy

Example

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR	Applied to	Behavior as published	Correct behavior
LWG 235	C++98	the effect of the default constructor was not specified	specified
LWG 1012	C++98	the underlying iterator was default-initialized	it is value-initialized
LWG 3435	C++20	the converting constructor from another `reverse_iterator` was not constrained	constrained

operator=	assigns another iterator adaptor (public member function)
make_reverse_iterator (C++14)	creates a `std::reverse_iterator` of type inferred from the argument (function template)

std::reverse_iterator<Iter>::reverse_iterator

Parameters

Example

Defect reports

See also