some problem of contains

[walkmiao]

1. Add will trigger resize,length and cap is cap value
   func (list *List) resize(cap int) { newElements := make([]interface{}, cap, cap) copy(newElements, list.elements) list.elements = newElements }

2. Contains will iterate default nil value,list.elements is the resized newElements。
   `func (list *List) Contains(values ...interface{}) bool {

   for _, searchValue := range values {
   found := false
   for _, element := range list.elements {
   if element == searchValue {
   found = true
   break
   }
   }
   if !found {
   return false
   }
   }
   return true
   }`

[emirpasic]

@walkmiao what seems to be the problem?

[walkmiao]

@walkmiao what seems to be the problem?

if values contains a value = nil and list.elements contains nil,but we never add nil to list.elements.
another one, contains iterate cap(elements)-len(elements) times meaningless operation?

[emirpasic]

@walkmiao I think I see your point, I'll implement a fix for all structures that might have such scenarios

[emirpasic]

@walkmiao thanks for reporting the issue.
This has been resolved in v1.18.1 by #205