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

 

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Calendar day (C++20) month (C++20) year (C++20) weekday (C++20) operator/ (C++20) year_month_day (C++20) year_month_day_last (C++20) year_month_weekday (C++20) year_month_weekday_last (C++20)   weekday_indexed (C++20) weekday_last (C++20) month_day (C++20) month_day_last (C++20) month_weekday (C++20) month_weekday_last (C++20) year_month (C++20) last_speclast (C++20)(C++20) chrono I/O parse (C++20)

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std::chrono::weekday

Member functions

weekday::weekday

weekday::operator++weekday::operator--

weekday::operator+=weekday::operator-=

weekday::c_encodingweekday::iso_encoding

weekday::ok

weekday::operator[]

Nonmember functions

operator==

operator+operator-

operator<<

from_stream

Helper classes

formatter<std::chrono::weekday>

formatter<std::chrono::hash> (C++26)

 

constexprstd::chrono::weekday_indexed     operator[](unsigned index )constnoexcept;	(1)	(since C++20)
constexprstd::chrono::weekday_last     operator[](std::chrono::last_spec)constnoexcept;	(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() 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.

Return value

1)std::chrono::weekday_indexed(*this, index)

2)std::chrono::weekday_last(*this)

Example

Run this code

#include <chrono>#include <iostream>usingnamespace std::chrono;   int main(){constexprauto second_tuesday_in_October_2019 = year_month_day{Tuesday[2]/ October / 2019y};   constexprauto 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