在go中处理数组，由于类型不匹配而无法编译代码

Question

So I'm trying to compile the forllowing code in go, which I just picked up a few hours ago

package main

import "fmt"

func main() {

    a := [...]float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
    sum := avg(a)
    fmt.Println(sum)

}

func avg(arr []float64) (sum float64) {
    for _, v := range arr {
        sum += v
    }
    sum = sum / float64(len(arr))
    return
}

I get an error saying that I can't pass the 10 element long array because the function was defined with a []float64 array. Is there a way around this or am I missing something obvious?

Answer 1

You define a as array of length and in avg you expect a slice of float64

If you dont need fixed length define a as slice:

a := []float64{...}

Or you can convert array to slice:

sum := avg(a[:])