funcsPZ.go
func SliceIndexOf(slice []string, val string) int {
	if slice == nil {
		return -1
	}

	for i, it := range slice {
		if it == val {
			return i
		}
	}
	return -1
}
func SliceIndexOf(slice []string, val string) int {
	if slice == nil {
		return -1
	}

	for i, it := range slice {
		if it == val {
			return i
		}
	}
	return -1
}
// SliceIndexOf gets the indx of val in slice. Returns -1 if not found.