golang diff of string arrays
package main
import "fmt"
func difference(slice1 []string, slice2 []string) []string {
var diff []string
// Loop two times, first to find slice1 strings not in slice2,
// second loop to find slice2 strings not in slice1
for i := 0; i < 2; i++ {
for _, s1 := range slice1 {
found := false
for _, s2 := range slice2 {
if s1 == s2 {
found = true
break
}
}
// String not found. We add it to return slice
if !found {
diff = append(diff, s1)
}
}
// Swap the slices, only if it was the first loop
if i == 0 {
slice1, slice2 = slice2, slice1
}
}
return diff
}
func main() {
slice1 := []string{"foo", "bar", "hello"}
slice2 := []string{"foo", "world", "bar", "foo"}
fmt.Printf("%+v\n", difference(slice1, slice2))
}