std::chrono::time_point<Clock,Duration>:: operator+=, operator-=

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time_point & operator + = ( const duration & d ) ;	(1)	(C++11부터) (C++17부터 constexpr)
time_point & operator - = ( const duration & d ) ;	(2)	(C++11부터) (C++17부터 constexpr)

주어진 지속 시간만큼 시간 포인트를 수정합니다.

1) 오프셋 d 를

pt

에 적용합니다. 효과적으로, d 가 내부에 저장된 duration

d_

에 d_ + = d 와 같이 추가됩니다.

2) 오프셋 d 를

pt

에 음의 방향으로 적용합니다. 효과적으로, d 가 내부에 저장된 지속 시간

d_

에서 d_ - = d 와 같이 감산됩니다.

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Member functions
time_point::time_point
time_point::time_since_epoch
time_point::operator+= time_point::operator-=
time_point::operator++ time_point::operator-- (C++20) (C++20)
time_point::min
time_point::max
Non-member functions
operator+ operator-
operator== operator!= operator< operator<= operator> operator>= operator<=> (until C++20) (C++20)
time_point_cast
floor (C++17)
ceil (C++17)
round (C++17)
Helper classes
common_type
hash <std::chrono::time_point> (C++26)

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