go: time包

1.time.time类型，用来表示时间

2.获取当前时间

now := time.now()

now := time.now().day()

now := time.now().minute()

now := time.now().month()

now := time.now().year()

3.格式化

fmt.printf("%02d%02d%02d %02d:%02d:%02d",now.year()....)
now := time.now() //获取当前时间
fmt.printf(now.format("02/1/2006 15:04"))

fmt.printf(now.format("2006/1/02 15:04"))

fmt.printf(now.format("2006/1/02"))

//格式化时要转化为的时间格式必须写 2006/1/02 15:04 即go的诞生时间

4.获取纳秒

time.duration

5.一些常量

const (
        nanosecond duration =1
        microsecond = 1000 * nanosecond
        millisecond = 1000*microsecond     
        second  = 1000* millisecond      
        minute = 60*second
        hour = 60* minute
)    

 

6.获取时间戳

time.now().unix() //获取当前时间戳
time.now().unixnano() //获取当前时间戳纳秒