std::counted_iterator<I>::count
constexpr std::iter_difference_t<I> count() const noexcept; |
(since C++20) |
Returns the underlying length that is the distance to the end.
Parameters
(none).
Return value
the underlying length.
Example
#include <iostream>
#include <iterator>
int main()
{
constexpr static auto il = { 1, 2, 3, 4, 5 };
constexpr std::counted_iterator i1{il.begin() + 1, 3};
static_assert(i1.count() == 3);
for (auto i2{i1}; std::default_sentinel != i2; ++i2)
std::cout << *i2 << ' ';
std::cout << '\n';
}
Output:
2 3 4
See also
|
(C++20)
|
accesses the underlying iterator (public member function) |
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