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

From cppreference.com
< cpp‎ | chrono‎ | weekday
 
 
Date and time library
(C++11)
(C++20)
(C++11)
(C++11)
(C++11)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)(C++20)
(C++20)(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)(C++20)
(C++20)

 
 
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 [07] or if !ok() the values (an underlying weekday and an index) held in the result are unspecified.
2) Constructs a weekday_last from *this. The result represents the last weekday in some yet-to-be-specified month.

[edit] Return value

[edit] 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年10月08日
2019年10月29日
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