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util.go
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util.go
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package util
import (
"fmt"
"math"
"strconv"
"time"
)
func Reverse(s string) (result string) {
for _, v := range s {
result = string(v) + result
}
return
}
func DateFromMD(month int, day int) time.Time {
return time.Date(1, time.Month(month), day, 0, 0, 0, 0, time.UTC)
}
func DateFromMDH(month int, day int, hour int) time.Time {
return time.Date(1, time.Month(month), day, hour, 0, 0, 0, time.UTC)
}
func DateFromYMDH(year int, month int, day int, hour int) time.Time {
return time.Date(year, time.Month(month), day, hour, 0, 0, 0, time.UTC)
}
func DoDatesOverlap(date1start, date1end, date2start, date2end time.Time) bool {
return (date1start.Before(date2end) || date1start.Equal(date2end)) &&
(date1end.After(date2start) || date1end.Equal(date2start))
}
func ToUrlValue(value interface{}) []string {
var v string
switch value.(type) {
case int:
v = strconv.Itoa(value.(int))
case string:
v = value.(string)
case float32:
return ToUrlValue(float64(value.(float32)))
case float64:
v = strconv.FormatFloat(value.(float64), 'f', 2, 64)
case time.Month:
return ToUrlValue(int(value.(time.Month)))
default:
panic("unsupported type: " + fmt.Sprintf("%T", value))
}
return []string{v}
}
// Pow returns n^m
func Pow(n, m int) int {
return int(math.Pow(float64(n), float64(m)))
}