How to sort in Go?

Question

go

Suppose I have a slice of bytes. How to sort it in Go?

arr := []byte{4, 3, 2, 1, 6, 3, 77, 8,3}
sort.Slice(arr, func(i, j int) bool {
  return arr[i] < arr[j]
})
fmt.Println(arr)

Is this the only way?
Is it possible to declare the comparison function 1 time and reuse it if we have to compare several slices?

Answer 1

If you need a function, you can do it like this

func SortBytes(arr []byte) {
    sort.Slice(arr, func(i, j int) bool {
        return arr[i] < arr[j]
    })
}
// потом использовать вот так
arr := []byte{4, 3, 2, 1, 6, 3, 77, 8,3}
sortBytes(arr)
fmt.Println(arr)

But I would use the one you have

sort.Slice(arr, func(i, j int) bool {
  return arr[i] < arr[j]
})
fmt.Println(arr)

Answer 2

sorter := func(i, j int) bool {
    return arr[i] < arr[j]
  }
  sort.Slice(arr, sorter)