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Implement crond by Golang
当用户设定的起始时间小于当前时间只启动一次任务
但是如果没有调用start,到了startTime貌似不会自动开始
func prevTime(setstarttime time.Time, period time.Duration) time.Time { tmp := setstarttime //临时时间点 for tmp.Add(period).Before(time.Now()) { tmp = tmp.Add(period) } return tmp }
这个时间是否能通过计算得出,而非循环判断?
bad case:
setstarttime 100年前的一刻
period 一毫秒
@那么将会产生次数非常多的循环,影响使用方性能
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