package main
// time 时间统计
import (
"fmt"
"log"
"time"
)
func main() {
println()
now_t := time.Now()
fmt.Printf("current now time:%v \n", now_t)
time.Sleep(3 * time.Second) // 这个咋就没有生效呢?,少了*time.Second
now_ti := time.Now()
fmt.Printf("current now_ti time:%v \n", now_ti)
sub_time := now_ti.Sub(now_t)
fmt.Println(sub_time)
println()
now := time.Now()
// 方法一:
beginningOfDay := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())
log.Println("今日已过(纳秒):", now.UnixNano()-beginningOfDay.UnixNano())
log.Println("今日已过(微秒):", now.UnixMicro()-beginningOfDay.UnixMicro())
log.Println("今日已过(毫秒):", now.UnixMilli()-beginningOfDay.UnixMilli())
log.Println("今日已过(秒):", now.Unix()-beginningOfDay.Unix())
// 方法二:
passedTimeNs := now.UnixNano() - beginningOfDay.UnixNano()
log.Println("今日已过(纳秒):", passedTimeNs)
log.Println("今日已过(微秒):", passedTimeNs/1e3)
log.Println("今日已过(毫秒):", passedTimeNs/1e6)
log.Println("今日已过(秒):", passedTimeNs/1e9)
/* 上述代码全部执行结果是:
current now time:2022-12-19 17:17:52.9564406 +0800 CST m=+0.002694601
current now_ti time:2022-12-19 17:17:55.9685528 +0800 CST m=+3.014751401
3.0120568s
2022/12/19 17:17:55 今日已过(纳秒): 62275968611600
2022/12/19 17:17:55 今日已过(微秒): 62275968611
2022/12/19 17:17:55 今日已过(毫秒): 62275968
2022/12/19 17:17:55 今日已过(秒): 62275
2022/12/19 17:17:55 今日已过(纳秒): 62275968611600
2022/12/19 17:17:55 今日已过(微秒): 62275968611
2022/12/19 17:17:55 今日已过(毫秒): 62275968
2022/12/19 17:17:55 今日已过(秒): 62275
*/
}
标签:12,17,16,19,Golang,已过,time,now
From: https://www.cnblogs.com/ludundun/p/16992645.html