英文:
Go printing date to console
问题
我正在尝试将月份、日期和年份分别打印到控制台。
我需要能够单独访问日期的每个部分。我可以使用"time"包中的time.now()获取整个日期，但之后我卡住了。
请问有人可以告诉我我错在哪里吗？
英文:
I'm trying to pint the month, day, and year, separately to the console.
I need to be able to access each section of the date individually. I can get the whole thing using time.now() from the "time" package but I'm stuck after that.
Can anyone show me where I am going wrong please?
答案1
得分: 31
你的代码已经非常接近了 
time.Now() 返回的是一个 Time 类型的值，你可以查看包文档 这里 来了解可以调用的一些方法（如果想快速浏览，请点击 这里 并查看 type Time 部分）。要获取你提到的每个属性，你可以这样做：
package main
import (
"fmt"
"time"
)
func main() {
t := time.Now()
fmt.Println(t.Month())
fmt.Println(t.Day())
fmt.Println(t.Year())
}
如果你想将 Month 打印为整数，可以使用 Printf 函数：
package main
import (
"fmt"
"time"
)
func main() {
t := time.Now()
fmt.Printf("%d\n", t.Month())
}
英文:
You're actually pretty close Then return value from time.Now() is a Time type, and looking at the package docs here will show you some of the methods you can call (for a quicker overview, go here and look under type Time). To get each of the attributes you mention above, you can do this:
package main
import (
"fmt"
"time"
)
func main() {
t := time.Now()
fmt.Println(t.Month())
fmt.Println(t.Day())
fmt.Println(t.Year())
}
If you are interested in printing the Month as an integer, you can use the Printf function:
package main
import (
"fmt"
"time"
)
func main() {
t := time.Now()
fmt.Printf("%d\n", t.Month())
}
答案2
得分: 2
Day, Month and Year可以从time.Time类型中使用Date()方法提取。它将返回day和year的整数值，以及month的time.Month类型。你也可以使用Clock()方法提取Hour、Minute和Second的值，它将返回所有结果的整数值。
例如：
package main
import (
"fmt"
"time"
)
func main() {
t := time.Now()
y, mon, d := t.Date()
h, m, s := t.Clock()
fmt.Println("Year: ", y)
fmt.Println("Month: ", mon)
fmt.Println("Day: ", d)
fmt.Println("Hour: ", h)
fmt.Println("Minute: ", m)
fmt.Println("Second: ", s)
}
请记住，Month变量（mon）以time.Month类型返回，而不是字符串或整数。你仍然可以使用fmt.Print()打印它，因为它有一个String()方法。
英文:
Day, Month and Year can be extracted from a time.Time type with the Date() method. It will return ints for both day and year, and a time.Month for the month. You can also extract the Hour, Minute and Second values with the Clock() method, which returns ints for all results.
For example:
package main
import (
"fmt"
"time"
)
func main() {
t := time.Now()
y, mon, d := t.Date()
h, m, s := t.Clock()
fmt.Println("Year: ", y)
fmt.Println("Month: ", mon)
fmt.Println("Day: ", d)
fmt.Println("Hour: ", h)
fmt.Println("Minute: ", m)
fmt.Println("Second: ", s)
}
Please remember that the Month variable (mon) is returned as a time.Month, and not as a string, or an int. You can still print it with fmt.Print() as it has a String() method.
答案3
得分: 0
你可以直接解析字符串以获取年、月和日。
package main
import (
"fmt"
"strings"
)
func main() {
currTime := time.Now()
date := strings.Split(currTime.String(), " ")[0]
splits := strings.Split(date, "-")
year := splits[0]
month := splits[1]
day := splits[2]
fmt.Printf("%s-%s-%s\n", year, month, day)
}
请注意，这是一个Go语言的代码示例，用于从当前时间中提取年、月和日。
英文:
You can just parse the string to get year, month, & day.
package main
import (
"fmt"
"strings"
)
func main() {
currTime := time.Now()
date := strings.Split(currTime.String(), " ")[0]
splits := strings.Split(date, "-")
year := splits[0]
month := splits[1]
day := splits[2]
fmt.Printf("%s-%s-%s\n", year, month, day)
}
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