Golang:如何按星期几对切片进行排序？

import (
    "time"
    "sort"
)

type Date struct {
    Date     time.Time
    Weekday  time.Weekday
}

dates := []Date{
    {Date: time.Date(2022, 1, 1, 0, 0, 0, 0, time.UTC)},
    {Date: time.Date(2022, 1, 2, 0, 0, 0, 0, time.UTC)},
    // 添加更多日期
}

// 按日期排序
sort.Slice(dates, func(i, j int) bool {
    return dates[i].Date.Before(dates[j].Date)
})

func getWeekdayNumber(date time.Time) int {
    return int(date.Weekday())
}

sort.SliceStable(dates, func(i, j int) bool {
    return getWeekdayNumber(dates[i].Date) < getWeekdayNumber(dates[j].Date)
})