工作中需要创建连续的时间片,找了许久,没找到Go语言快速生成时间片的函数包,算了,自己写一个吧
该函数类似于python中的pd.date_range()函数,功能相似,但是略有不同。
函数功能说明:
Start, End 为起止时间
根据feq的不同,当feq大于0时,可根据需要分的时间片个数分;
当feq小于0时,可以根据自己设定格式分,其中,-1:Second -2:Minute -3:Hour -4:Day -5:Month,各有所指,此时,slice输入为要分的具体数值,feq为单位
package main import ( "fmt" "time" ) // TimeSlice ... type TimeSlice struct { StartTime time.Time `json:"start_time"` EndTime time.Time `json:"end_time"` } // GenTimeSlice ... // 参数说明: // Start End time.Time 起止时间 // feq int 可输入的值(正数:时间片个数另可作为slice的单位:-1:Second -2:Minute -3:Hour -4:Day -5:Month) // slice float32 浮点数: 时间片的大小,单位由feq决定 func GenTimeSlice(Start, End time.Time, feq int, slice float32) ([]TimeSlice, bool) { if Start.After(End) { return nil, false } result := []TimeSlice{TimeSlice{Start, End}} if feq > 0 { // 按个数生成时间片 result = genByNums(Start, End, feq) return result, true } if slice <= 0 { return result, true } Gap := End.Unix() - Start.Unix() var Step int64 switch feq { case -1: // Second Step = int64(slice) break case -2: // Minute Step = int64(slice * 60) break case -3: // Hour Step = int64(slice * 60 * 60) break case -4: // Day Step = int64(slice * 60 * 60 * 24) break case -5: // Week Step = int64(slice * 60 * 60 * 24 * 7) break case -6: // Month Step = int64(slice * 60 * 60 * 24 * 30) break default: return result, true } if Gap < Step { return result, true } result = genByStep(Start, End, Step) return result, true } // genByMin ... func genByStep(Start, End time.Time, Step int64) []TimeSlice { timeDistance := End.Unix() - Start.Unix() count := timeDistance / Step result := make([]TimeSlice, 0) for i := 0; i < int(count); i++ { newGap := int64(i)*Step + Start.Unix() start := time.Unix(newGap, 0) newGap = int64(i+1)*Step + Start.Unix() end := time.Unix(newGap, 0) timeSliceTmp := TimeSlice{StartTime: start, EndTime: end} result = append(result, timeSliceTmp) } return result } // genByNums ... func genByNums(Start, End time.Time, feq int) []TimeSlice { timeDistance := End.Unix() - Start.Unix() timeStep := timeDistance / int64(feq) result := make([]TimeSlice, 0) for i := 0; i < feq; i++ { newGap := int64(i)*timeStep + Start.Unix() start := time.Unix(newGap, 0) newGap = int64(i+1)*timeStep + Start.Unix() end := time.Unix(newGap, 0) timeSliceTmp := TimeSlice{StartTime: start, EndTime: end} result = append(result, timeSliceTmp) } return result } func main() { s1 := time.Unix(1568516266, 0) s2 := time.Now().Local() if kkk, ok := GenTimeSlice(s1, s2, -3, 2.5); ok { fmt.Println("序号", " ", "起始时间", " ", "终止时间") for i, val := range kkk { fmt.Println(i+1, " ", val.StartTime.Format("2006-01-02 15:04"), " ", val.EndTime.Format("2006-01-02 15:04")) } } }
输出:
序号 起始时间 终止时间 1 2019-09-15 10:57 2019-09-15 13:27 2 2019-09-15 13:27 2019-09-15 15:57 3 2019-09-15 15:57 2019-09-15 18:27 4 2019-09-15 18:27 2019-09-15 20:57 5 2019-09-15 20:57 2019-09-15 23:27 6 2019-09-15 23:27 2019-09-16 01:57 7 2019-09-16 01:57 2019-09-16 04:27 ...
附注:Go中Time包的使用