std::counted_iterator<I>::operator*,->
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< cpp | iterator | counted iterator
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std::counted_iterator
counted_iterator::operator*counted_iterator::operator->
(C++20)(C++20)
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(C++20)
(C++20)
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(C++20)
constexpr decltype(auto) operator*();
(1)
(since C++20)
constexpr decltype(auto) operator*() const
requires /*dereferenceable*/<const I>;
(2)
(since C++20)
requires /*dereferenceable*/<const I>;
constexpr auto operator->() const noexcept
requires std::contiguous_iterator <I>;
(3)
(since C++20)
requires std::contiguous_iterator <I>;
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);.
Contents
[edit] Parameters
(none)
[edit] Return value
Reference or pointer to the current element.
[edit] 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