std::chrono::weekday::operator[]

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< cpp‎ | chrono‎ | weekday
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chrono I/O
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C-style date and time
std::chrono::weekday
constexpr std::chrono::weekday_indexed
    operator[ ] ( unsigned index ) const noexcept ;
(1) (since C++20)
constexpr std::chrono::weekday_last
    operator[ ] ( std::chrono::last_spec ) const noexcept ;
(2) (since C++20)
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()
2) Constructs a weekday_last from *this

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
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