You can use a map to keep track of a letters sum. Here's your example
slightly modified (it uses float64 as you were using
that): https://play.golang.org/p/98L9fDXSN_A
El lunes, 5 de marzo de 2018, 15:28:54 (UTC-3), Ashish Timilsina escribió:
>
> Hi,
>
> I have an array of array string ([][]string{}). I am looping through them
> and trying to sum the second value of the arrays based on the first value.
> For example:
> a := []string{"a", "1"}
> a1 := []string{"a", "2"}
> a2 := []string{"a", "3"}
> b := []string{"b", "4"}
> b1 := []string{"b", "1"}
>
> Sum all the 'a' values and 'b' values.
> Here's the sample code:
> package main
>
>
> import (
> "fmt"
> "log"
> "strconv"
> )
>
>
> func main() {
>
>
> a := []string{"a", "1"}
> a1 := []string{"a", "2"}
> a2 := []string{"a", "3"}
> b := []string{"b", "4"}
> b1 := []string{"b", "2"}
> b2 := []string{"b", "1"}
> dataarray := [][]string{}
> dataarray = append(dataarray, a, a1, a2, b, b1, b2)
> var totalSum float64
> for j, _ := range dataarray {
> sumFloat, err := strconv.ParseFloat(dataarray[j][1], 64)
> if err != nil {
> log.Fatal(err)
> }
> totalSum += sumFloat
>
>
> }
> fmt.Println(totalSum)
> }
>
> Right now, its summing all the values. The result I want is:
> a: 6
> b: 7
>
> Let me know if there's a way to do this. Here's the link to go playground:
> https://play.golang.org/p/KL8GQ7LPJNi
>
>
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