public member function
<array>

std::array::crbegin

const_reverse_iterator crbegin() const noexcept;
Return const_reverse_iterator to reverse beginning
Returns a const_reverse_iterator pointing to the last element in the array container.

A const_reverse_iterator is an iterator that points to const content and iterates in reverse order. This iterator can be increased and decreased (unless it is itself also const), just like the iterator returned by array::rbegin, but it cannot be used to modify the contents it points to.

Parameters

none

Return Value

A const_reverse_iterator to the beginning of the sequence.

Member type const_reverse_iterator is a reverse random access iterator type that points to a const element (see array member types).

Example

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// array::crbegin/crend
#include <iostream>
#include <array>

int main ()
{
  std::array<int,6> myarray = {10, 20, 30, 40, 50, 60} ;

  std::cout << "myarray backwards:";
  for ( auto rit=myarray.crbegin() ; rit < myarray.crend(); ++rit )
    std::cout << ' ' << *rit;   // cannot modify *rit

  std::cout << '\n';

  return 0;
}


Output:
myarray backwards: 60 50 40 30 20 10

Complexity

Constant.

Iterator validity

No changes.

Data races

No contained elements are accessed by the call, but the iterator returned can be used to access them. Concurrently accessing or modifying different elements is safe.

Exception safety

No-throw guarantee: this member function never throws exceptions.
The copy construction or assignment of the returned iterator is also guaranteed to never throw.

See also

array::rbegin
Return reverse iterator to reverse beginning (public member function )
array::back
Access last element (public member function )
array::crend
Return const_reverse_iterator to reverse end (public member function )
array::cbegin
Return const_iterator to beginning (public member function )
array::cend
Return const_iterator to end (public member function )

C++