如何从给定日期以字符串查找工作日？

Question

I have a function in my app that saves the date in string into the database, but it can't save the day on that date. I have tried a short code on this. Suppose we have a date in string.

Code:

package main

import (
    "fmt"
    "strconv"
    "strings"
    "time"
)   

func main() {
    p := fmt.Println
    date := "01-25-2019"
    arrayDate := strings.Split(date, "-")
    fmt.Println(arrayDate)
    month, _ := strconv.Atoi(arrayDate[0])
    dateInt, _ := strconv.Atoi(arrayDate[1])
    year, _ := strconv.Atoi(arrayDate[2])
    then := time.Date(
        year, time.Month(month), dateInt, 0, 0, 0, 0, time.UTC)
    p(then)

    p(then.Weekday())

}

Is there any more efficient way to do this?

playground link

Answer 1

Yes, simply parse the time using time.Parse(), e.g.

date := "01-25-2019"
t, err := time.Parse("01-02-2006", date)
if err != nil {
    panic(err)
}
fmt.Println(t.Weekday())

time.Parse() will do the parsing that you tried to implement manually. Note that the first parameter to time.Parse() is a layout string, it must contain a reference time (which is Mon Jan 2 15:04:05 -0700 MST 2006) in the format your input is given.

Output (try it on the Go Playground):

Friday