std::counted_iterator<I>:: operator*,->

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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::counted_iterator
constexpr decltype ( auto ) operator * ( ) ;
(1) (since C++20)
constexpr decltype ( auto ) operator * ( ) const
requires /*dereferenceable*/ < const I > ;
(2) (since C++20)
constexpr auto operator - > ( ) const noexcept
requires std:: contiguous_iterator < I > ;
(3) (since C++20)
1,2) Returns a reference to the current element. The behavior is undefined if this - > count ( ) <= 0 . The function's body is equivalent to return * current ; .
3) Returns a pointer to the current element. The function's body is equivalent to return std:: to_address ( current ) ; .

Parameters

(none)

Return value

Reference or pointer to the current element.

Example

Run this code 
#include <complex>
#include <iostream>
#include <iterator>
using std::operator""i;
 
int main()
{
    const auto il = {1.i, 2.i, 3.i, 4.i, 5.i};
 
    for (std::counted_iterator i{il.begin() + 1, 3}; i != std::default_sentinel; ++i)
        std::cout << *i << ' ';
    std::cout << '\n';
 
    for (std::counted_iterator i{il.begin() + 1, 3}; i != std::default_sentinel; ++i)
        std::cout << i->imag() << ' ';
    std::cout << '\n';
}

Output: 

(0,2) (0,3) (0,4)
2 3 4

See also

(C++20)
accesses an element by index
(public member function)
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