// In reports whether the key is found among a given list of keys.
In reports whether the key is found among a given list of keys.
// In reports whether the key is found among a given list of keys .
func (k Key) In(keys []Key) bool {
	for _, key := range keys {
		if k == key {
			return true
		}
	}
	return false
}
func ( k Key ) In ( keys [ ] Key ) bool { for _ , key := range keys { if k == key { return true } } return false }
In reports whether the key is found among a given list of keys.
In reports whether the key is found among a given list of keys .