golang check if item exists in slice

slice_exists.go

package main

import(
	"fmt"
	"reflect"
)

func main() {
	items := []int{1,2,3,4,5,6}
	fmt.Println(SliceExists(items, 5)) // returns true
	fmt.Println(SliceExists(items, 10)) // returns false
}

func SliceExists(slice interface{}, item interface{}) bool {
	s := reflect.ValueOf(slice)

	if s.Kind() != reflect.Slice {
		panic("SliceExists() given a non-slice type")
	}

	for i := 0; i < s.Len(); i++ {
		if s.Index(i).Interface() == item {
			return true
		}
	}

	return false
}