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std::chrono::time_point::operators (operator-)

STD：：时间：：时间[医]要点：操作员+，操作员-

​(1)​
time_point& operator+=( const duration& d (until C++17)
constexpr time_point& operator+=( const duration& d (since C++17)
​(2)​
time_point& operator-=( const duration& d (until C++17)
constexpr time_point& operator-=( const duration& d (since C++17)

根据给定的持续时间修改时间点。

1%29应用偏移量d到pt有效地，d添加到内部存储的持续时间中。d_如d_ += d...

2%29应用偏移量d到pt向负方向。实际上，d从内部存储的持续时间中减去d_如d_ -= d...

参数

d-a time offset to apply

返回值

*this...

例外

%280%29

另见

operator+operator-modifies the time point by the given duration (function template)

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http：//en.cppreference.com/w/cpp/crono/time[医]点/算子[医]阿瑞斯

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