30 Time library [time]

30.8 The civil calendar [time.cal]

30.8.4 Class month [time.cal.month]

30.8.4.2 Member functions [time.cal.month.members]

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constexpr explicit month(unsigned m) noexcept;
1
#
Effects: Initializes m_ with m.
The value held is unspecified if m is not in the range [0, 255].
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constexpr month& operator+() noexcept;
2
#
Returns: *this.
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constexpr month operator+(int) noexcept;
4
#
Returns: A copy of *this as it existed on entry to this member function.
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constexpr month& operator-() noexcept;
6
#
Returns: *this.
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constexpr month operator-(int) noexcept;
8
#
Returns: A copy of *this as it existed on entry to this member function.
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constexpr month& operator+=(const months& m) noexcept;
10
#
Returns: *this.
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constexpr month& operator-=(const months& m) noexcept;
12
#
Returns: *this.
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constexpr explicit operator unsigned() const noexcept;
14
#
Returns: m_.
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constexpr bool ok() const noexcept;
15
#
Returns: 1 <= m_ && m_ <= 12.

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