at operator return -1 when fails in lists and arrays; insert operators (<< and >>) changes che container if it is a variable

types/array/array-type.go

@@ -51,6 +51,18 @@ func ArrayFromStrings(stringSlice []string) (aRef *ArrayType) {
 	return
 }
 
+func ArrayFromIntsA(ints ...int) (aRef *ArrayType) {
+	return ArrayFromInts(ints)
+}
+
+func ArrayFromInts(intSlice []int) (aRef *ArrayType) {
+	aRef = MakeArray(len(intSlice), 0)
+	for i, s := range intSlice {
+		(*aRef)[i] = int64(s)
+	}
+	return
+}
+
 func (aRef *ArrayType) ToString(opt kern.FmtOpt) (s string) {
 	indent := kern.GetFormatIndent(opt)
 	flags := kern.GetFormatFlags(opt)

types/list/linked-list.go

@@ -141,6 +141,19 @@ func (ls *LinkedList) Last() (data any, err error) {
 	return
 }
 
+// func (ls *LinkedList) Reverse() *ListNode {
+// 	var prev *ListNode
+
+// 	for current := ls.first; current != nil; {
+// 		succ := current.next
+// 		prev = succ.next
+// 		succ.next = current
+// 		current = prev
+// 	}
+// 	ls.first, ls.last = ls.last, ls.first
+// 	return ls.first
+// }
+
 func (ls *LinkedList) NodeAt(index64 int64) (node *ListNode, err error) {
 	index := int(index64)
 	if ls.count == 0 {