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std::chrono::weekday::operator[](3) | C++ Standard Libary | std::chrono::weekday::operator[](3) |
NAME¶
std::chrono::weekday::operator[] - std::chrono::weekday::operator[]
Synopsis¶
constexpr std::chrono::weekday_indexed operator[](unsigned index)
(1) (since C++20)
const noexcept;
constexpr std::chrono::weekday_last (2) (since C++20)
operator[](std::chrono::last_spec) const noexcept;
1) Constructs a weekday_indexed from *this and index. The result represents
the
index-th weekday in some yet-to-be-specified month. If index is not in the
range [0,
7] or if !ok() the values held in the result is unspecified.
2) Constructs a weekday_last from *this. The result represents the last
weekday in
some yet-to-be-specified month.
Return value¶
1) std::chrono::weekday_indexed(*this, index)
2) std::chrono::weekday_last(*this)
Example¶
// Run this code
#include <chrono>
#include <iostream>
using namespace std::chrono;
int main()
{
constexpr auto second_tuesday_in_October_2019 =
year_month_day{ Tuesday[2] / October / 2019y };
constexpr auto last_tuesday_in_October_2019 =
year_month_day { Tuesday[last] / October / 2019y };
std::cout << second_tuesday_in_October_2019 << '\n'
<< last_tuesday_in_October_2019 << '\n';
}
Possible output:¶
2019-10-08
2019-10-29
2022.07.31 | http://cppreference.com |