3.7 KiB
[time.cal.mwdlast]
30 Time library [time]
30.8 The civil calendar [time.cal]
30.8.12 Class month_weekday_last [time.cal.mwdlast]
30.8.12.1 Overview [time.cal.mwdlast.overview]
namespace std::chrono {class month_weekday_last { chrono::month m_; // exposition only chrono::weekday_last wdl_; // exposition onlypublic:constexpr month_weekday_last(const chrono::month& m, const chrono::weekday_last& wdl) noexcept; constexpr chrono::month month() const noexcept; constexpr chrono::weekday_last weekday_last() const noexcept; constexpr bool ok() const noexcept; };}
month_weekday_last represents the last weekday of a month, of an as yet unspecified year.
To do this the month_weekday_last stores a month and a weekday_last.
[Example 1: constexpr auto mwd = February/Tuesday[last]; // mwd is the last Tuesday of February of an as yet unspecified yearstatic_assert(mwd.month() == February);static_assert(mwd.weekday_last() == Tuesday[last]); â end example]
month_weekday_last is a trivially copyable and standard-layout class type.
30.8.12.2 Member functions [time.cal.mwdlast.members]
constexpr month_weekday_last(const chrono::month& m, const chrono::weekday_last& wdl) noexcept;
Effects: Initializes m_ with m, and wdl_ with wdl.
constexpr chrono::month month() const noexcept;
Returns: m_.
constexpr chrono::weekday_last weekday_last() const noexcept;
Returns: wdl_.
constexpr bool ok() const noexcept;
Returns: m_.ok() && wdl_.ok().
30.8.12.3 Non-member functions [time.cal.mwdlast.nonmembers]
constexpr bool operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept;
Returns: x.month() == y.month() && x.weekday_last() == y.weekday_last().
template<class charT, class traits> basic_ostream<charT, traits>& operator<<(basic_ostream<charT, traits>& os, const month_weekday_last& mwdl);
Effects: Equivalent to:return os << format(os.getloc(), STATICALLY-WIDEN("{:L}/{:L}"), mwdl.month(), mwdl.weekday_last());