start the tower of abstractions

vector/vector.go

@@ -51,15 +51,14 @@ func (this *Vector) String() string {
 	return String(this)
 }
 
-func ToList(this *Vector) *list.List {
-	var l *list.List
-	l = nil
+func ToList(this *Vector) list.IList {
+	l := list.New()
 	for i := len(this._slice) - 1; i >= 0; i-- {
 		l = list.Conj(l, this._slice[i])
 	}
 	return l
 }
 
-func (this *Vector) ToList() *list.List {
+func (this *Vector) ToList() list.IList {
 	return ToList(this)
 }