Averaging by time in a slice of structs

[Christian Espinoza]

Hi guys, I'm averaging values by hour in a slice of structs in a basic way, and I would get a better aproach to it in order to get a most generic funcion that can also get averaging by hours, days, weeks, etc.

http://play.golang.org/p/lL3YDD4ecE

package main

import (

"fmt"

"math/rand"

"time"

)

type Acc struct {

name  string

money int

date time.Time

}

type Accs []Acc

const Tformat = "02/01/2006 15:04:05"

func main() {

var myaccs Accs

acc := 0

var loops int

var hour int

f1, _ := time.Parse(Tformat, "29/08/2013 00:00:19")

// Creating a Slice of structs 

for i := 0; i < 10; i++ { 

f1 = f1.Add(20 * time.Minute) //adding 20 minutes to every record

myaccs = append(myaccs, Acc{name: "christian", money: rand.Intn(200), date: f1})

fmt.Printf("Added to slice: %v, %d, %s\n", myaccs[i].name, myaccs[i].money, myaccs[i].date)

}

// Averaging 

for _, v := range myaccs {

if acc == 0 {

hour = v.date.Hour()

acc += v.money

loops++

} else {

if v.date.Hour() == hour {

acc += v.money

loops++

} else {

fmt.Printf("Average money value to hour %d : %d\n", hour, acc / loops) //->Action

acc = v.money

hour = v.date.Hour()

loops = 1

}

}

//fmt.Println(v, acc, loops, hour)

}

fmt.Printf("Average money value to hour %d : %d\n", hour, acc / loops)//->Action

}

Thanks in advance.

Christian.

[Kyle Lemons]

Time math is frought with peril, but that being said I think this should be mostly correct:

https://gist.github.com/kylelemons/6415405

http://play.golang.org/p/kvk3yCeYHw

I think it came out quite nicely.

--
You received this message because you are subscribed to the Google Groups "golang-nuts" group.
To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.

[Nigel Tao]

On Tue, Sep 3, 2013 at 12:31 AM, Christian Espinoza
<chesp...@gmail.com> wrote:
> Hi guys, I'm averaging values by hour in a slice of structs in a basic way,
> and I would get a better aproach to it in order to get a most generic
> funcion that can also get averaging by hours, days, weeks, etc.

I'd write it like http://play.golang.org/p/ytA-yw9iww

[Christian Espinoza]

Thanks Kyle, I'm checking it..

[Christian Espinoza]

Nice!, Thanks Nigel...