std::chrono::weekday_last::weekday_last
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< cpp | chrono | weekday last
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std::chrono::weekday_last
Member functions
weekday_last::weekday_last
Nonmember functions
Helper classes
(C++26)
constexpr explicit weekday_last( const std::chrono::weekday & wd ) noexcept;
(since C++20)
Constructs a weekday_last object storing the weekday wd.
[edit] Notes
A more convenient way to construct a weekday_last is with weekday's operator[], i.e., wd[std::chrono::last ].
[edit] Example
Run this code
#include <chrono> #include <iostream> using namespace std::chrono; int main() { const year_month_day ymd{floor<days>(system_clock::now())}; const weekday_last wdl{Sunday[last]}; // A last Sunday of a month const year_month_day last_sun{ymd.year() / ymd.month() / wdl}; std::cout << "The last Sunday of current month falls on " << (int)last_sun.year() << '/' << (unsigned)last_sun.month() << '/' << (unsigned)last_sun.day() << '\n'; }
Possible output:
The last Sunday of current month falls on 2021年9月26日