tmp/tmpec5s7a5x/{from.md → to.md}
RENAMED
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| 1 |
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#### Overview <a id="time.cal.wd.overview">[[time.cal.wd.overview]]</a>
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``` cpp
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namespace std::chrono {
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class weekday {
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unsigned char wd_; // exposition only
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public:
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weekday() = default;
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constexpr explicit weekday(unsigned wd) noexcept;
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constexpr weekday(const sys_days& dp) noexcept;
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constexpr explicit weekday(const local_days& dp) noexcept;
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constexpr weekday& operator++() noexcept;
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constexpr weekday operator++(int) noexcept;
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constexpr weekday& operator--() noexcept;
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constexpr weekday operator--(int) noexcept;
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constexpr weekday& operator+=(const days& d) noexcept;
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constexpr weekday& operator-=(const days& d) noexcept;
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constexpr unsigned c_encoding() const noexcept;
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constexpr unsigned iso_encoding() const noexcept;
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constexpr bool ok() const noexcept;
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constexpr weekday_indexed operator[](unsigned index) const noexcept;
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constexpr weekday_last operator[](last_spec) const noexcept;
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};
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}
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```
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`weekday` represents a day of the week in the civil calendar. It
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normally holds values in the range `0` to `6`, corresponding to Sunday
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through Saturday, but it may hold non-negative values outside this
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range. It can be constructed with any `unsigned` value, which will be
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subsequently truncated to fit into `weekday`’s unspecified internal
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storage. `weekday` meets the *Cpp17EqualityComparable* (
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[[cpp17.equalitycomparable]]) requirements.
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[*Note 1*: `weekday` is not *Cpp17LessThanComparable* because there is
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no universal consensus on which day is the first day of the week.
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`weekday`’s arithmetic operations treat the days of the week as a
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circular range, with no beginning and no end. — *end note*]
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`weekday` is a trivially copyable and standard-layout class type.
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