英文:
TimeZone to Offset?
问题
我想要从指定的时区获取偏移量（以秒为单位）。这正是Perl的Time::Zone中的tz_offset()所做的："确定指定时区相对于GMT的偏移量（以秒为单位）"。
在Go语言中是否已经有一种方法可以实现这个功能？输入是一个只包含时区名称的字符串，但我知道Go语言的time包中有LoadLocation()函数，所以字符串 => 偏移量或位置 => 偏移量都可以。
输入: "MST"
输出: -25200
英文:
I want to get the offset in seconds from a specified time zone. That is exactly what tz_offset() in Perl's Time::Zone does: "determines the offset from GMT in seconds of a specified timezone".
Is there already a way of doing this in Go? The input is a string that has the time zone name and that's it, but I know that Go has LoadLocation() in the time package, so string => offset or location => offset should be fine.
Input: "MST"
Output: -25200
答案1
得分: 4
这应该能解决问题：
location, err := time.LoadLocation("MST")
if err != nil {
panic(err)
}
tzName, tzOffset := time.Now().In(location).Zone()
fmt.Printf("name: [%v]\toffset: [%v]\n", tzName, tzOffset)
将打印出：
name: [MST] offset: [-25200]
Go Playground: https://play.golang.org/p/GVTgnpe1mB1
英文:
This should do the trick:
location, err := time.LoadLocation("MST")
if err != nil {
panic(err)
}
tzName, tzOffset := time.Now().In(location).Zone()
fmt.Printf("name: [%v]\toffset: [%v]\n", tzName, tzOffset)
Will print:
>name: [MST] offset: [-25200]
Go Playground: https://play.golang.org/p/GVTgnpe1mB1
答案2
得分: 0
这是计算本地时区和指定时区之间当前偏移量的代码。我同意Ainar-G的评论，偏移量只在与指定的时间点相关时才有意义：
package main
import (
"fmt"
"time"
)
func main() {
loc, err := time.LoadLocation("MST")
if err != nil {
fmt.Println(err)
}
now := time.Now()
_, destOffset := now.In(loc).Zone()
_, localOffset := now.Zone()
fmt.Println("偏移量:", destOffset-localOffset)
}
英文:
Here is the code, that calculates current offset between local and specified timezones. I agree with Ainar-G's comment that offset makes sense only with relation to specified moment in time:
package main
import (
"fmt"
"time"
)
func main() {
loc, err := time.LoadLocation("MST")
if err != nil {
fmt.Println(err)
}
now := time.Now()
_, destOffset := now.In(loc).Zone()
_, localOffset := now.Zone()
fmt.Println("Offset:", destOffset-localOffset)
}
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