// Delete removes an item from the list. If the item is the last item in the list,
// the length will decrease.
func (l List) Delete(i int) error {
if i < 0 {
return ErrInvalidIndex
}
length, err := strconv.Atoi(string(l.b.Get(lengthKey)))
if err != nil {
return err
}
if i >= length {
return ErrInvalidIndex
}
if i == length-1 {
newLength := strconv.Itoa(i)
if err := helpers.PutWrap(l.b, lengthKey, []byte(newLength)); err != nil {
return err
}
}
if err := helpers.DeleteWrap(l.b, []byte(strconv.Itoa(i))); err != nil {
return err
}
return nil
}
// Delete deletes from the map.
func (m Map) Delete(key string) error {
return helpers.DeleteWrap(m.b, []byte(key))
}
