std::chrono::month_weekday_last::ok
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< cpp | chrono | month weekday last
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std::chrono::month_weekday_last
Member functions
month_weekday_last::ok
Nonmember functions
Helper classes
constexpr bool ok() const noexcept;
(since C++20)
Checks if the contained month and weekday_last objects are valid.
[edit] Return value
month().ok() && weekday_last().ok()
[edit] Example
Run this code
#include <chrono> #include <iostream> int main() { std::cout << std::boolalpha ; auto mwdl{std::chrono::March /std::chrono::Wednesday [std::chrono::last ]}; std::cout << (mwdl.ok()) << ' '; mwdl = {std::chrono::month (3)/std::chrono::weekday (42)[std::chrono::last ]}; std::cout << (mwdl.ok()) << '\n'; }
Output:
true false