The use of range in the go language

This article illustrates the use of range in the go language. Share with you for your reference. The specific analysis is as follows:

range is a function defined by the go language system.

The function iterates through each value in an array, returning the lower value of the value and the actual value here.
If a[0]=10, then the return value of a[0] is 0, 10.

Here is an example: this example is the average value of an array.

package main

import (

    "fmt"

)

func main() {

    sum := 0.0

    var avg float64

    xs := []float64{1, 2, 3, 4, 5, 6}

    switch len(xs) {

    case 0:

        avg = 0

    default:

        for _, v := range xs {// The underscore indicates that the value is left out, that is, the subscript index is left out 

            sum += v

        }

        avg = sum / float64(len(xs))

    }

    fmt.Println(avg)

}

I hope this article has been helpful to your programming of Go language.