A example of string to a slice of bytes in Go, using a function example from Effective Go

str2slice.go

// From effective Go
// Compare returns an integer comparing the two byte slices,
// lexicographically.
// The result will be 0 if a == b, -1 if a < b, and +1 if a > b

package main

import "fmt"

func Compare(a, b []byte) int {
	for i := 0; i < len(a) && i < len(b); i++ {
		switch {
		case a[i] > b[i]:
			return 1
		case a[i] < b[i]:
			return -1
		}
	}
	switch {
	case len(a) < len(b):
		return -1
	case len(a) > len(b):
		return 1
	}
	return 0
}

func main() {
	a := []byte("chaus")
	b := []byte("chauss")
	fmt.Printf("'%s' es igual a '%s'? = %d", a, b, Compare(a, b))
}