for {
t := time.Now()
fmt.Printf("%s\n", t)
time.Sleep(1 * time.Second)
}
output like
2017-09-10 17:37:50.53011 +0800 CST m=+0.001002600
2017-09-10 17:37:51.5331888 +0800 CST m=+1.004081400
2017-09-10 17:37:57.5359402 +0800 CST m=+7.006832800
2017-09-10 17:37:58.536241 +0800 CST m=+8.007133600
2017-09-10 17:37:59.5363434 +0800 CST m=+9.007236000
don’t know why , output line 1,and line 4, 53011,536241,len=5
other line , len=7