Go语言借助时间包为测量和显示时间提供了内置支持。在此程序包中,日历计算始终采用公历,没有with秒。该软件包提供了一个ParseDuration()函数,该函数可以解析持续时间字符串。持续时间字符串是带符号的十进制数字序列,带有可选的分数和单位后缀,例如“100ms”,“2.3h”或“4h35m”。要访问ParseDuration()函数,您需要借助import关键字在程序中添加时间包。
注意:有效时间单位为“ns”,“us”(或“µs”),“ms”,“s”,“m”,“h”。
用法:
func ParseDuration(str string) (Duration, error)
范例1:
// Golang program to illustrate
// how to find time duration
package main
import (
"fmt"
"time"
)
func main() {
// Using ParseDuration() function
hr, _:= time.ParseDuration("3h")
comp, _:= time.ParseDuration("5h30m40s")
fmt.Println("Time Duration 1:", hr)
fmt.Println("Time Duration 2:", comp)
}
输出:
Time Duration 1: 3h0m0s Time Duration 2: 5h30m40s
范例2:
// Golang program to illustrate
// how to find time duration
package main
import (
"fmt"
"time"
)
func main() {
// Using ParseDuration() function
hr, _:= time.ParseDuration("5h")
comp, _:= time.ParseDuration("2h30m40s")
m1, _:= time.ParseDuration("3µs")
m2, _:= time.ParseDuration("3us")
fmt.Println("Time Duration 1:", hr)
fmt.Println("Time Duration 2:", comp)
fmt.Printf("There are %.0f seconds in %v.\n",
comp.Seconds(), comp)
fmt.Printf("There are %d nanoseconds in %v.\n",
m1.Nanoseconds(), m1)
fmt.Printf("There are %6.2e seconds in %v.\n",
m2.Seconds(), m1)
}
输出:
Time Duration 1: 5h0m0s Time Duration 2: 2h30m40s There are 9040 seconds in 2h30m40s. There are 3000 nanoseconds in 3µs. There are 3.00e-06 seconds in 3µs.
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注:本文由纯净天空筛选整理自Kirti_Mangal大神的英文原创作品 time.ParseDuration() Function in Golang With Examples。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。