英文:
Get the first and last day of a year from a timestamp
问题
给定一个时间对象，t := time.Now()，有没有办法获取该年份的第一天和最后一天的时间戳？
我可以这样做：d := t.YearDay() 来获取一年中的天数，然后使用 t.AddDate(0, 0, -d) 来获取该年的开始时间，使用 t.AddDate(0, 0, 365-d) 来获取该年的结束时间，但这种方法似乎不够灵活，无法处理闰年等情况。
英文:
Given a time object, t := time.Now(), is there a way I could get a timestamp for the first and last days of that year?
I could do something like d := t.YearDay() to get the number of days through the year, and then t.AddDate(0, 0, -d) to get the start of the year, and t.AddDate(0, 0, 365-d) to get the end of the year, but that seems to brittle as it doesn't deal with leap years etc.
答案1
得分: 7
你可以使用Time结构对象，并使用time.Date和time.Time.Year函数创建新的Time结构对象。所以，如果当前时间是t := time.Now()，那么UTC时区中今年的最后一天将是lt := time.Date(t.Year(), time.December, 31, 0, 0, 0, 0, time.UTC)。
以下是一个示例：
package main
import "fmt"
import "time"
func main() {
t := time.Now()
last := time.Date(t.Year(), time.December, 31, 0, 0, 0, 0, time.UTC)
first := time.Date(t.Year(), time.January, 1, 0, 0, 0, 0, time.UTC)
fmt.Println("当前时间: ", t)
fmt.Println("本年度第一天: ", first)
fmt.Println("本年度最后一天: ", last)
}
你可以在这里运行这个示例：http://play.golang.org/p/jahjd_mi6K
英文:
You can use your Time struct object and create new Time struct object using time.Date and time.Time.Year() functions. So, if current time is t := time.Now() then last day in this year in UTC will be lt := time.Date(t.Year(), time.December, 31, 0, 0, 0, 0, time.UTC)
Here's an example:
package main
import "fmt"
import "time"
func main() {
t := time.Now()
last := time.Date(t.Year(), time.December,31, 0, 0, 0, 0, time.UTC)
first := time.Date(t.Year(), time.January,1, 0, 0, 0, 0, time.UTC)
fmt.Println("Current: ", t)
fmt.Println("First: ", first)
fmt.Println("Last: ", last)
}
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论