add Cons and IListify all the things

list/list.go

@@ -35,17 +35,22 @@ func Empty() IList {
 
 var emptyList = Empty()
 
-func New(val any) *List {
+func New(val any) IList {
 	this := new(List)
 	this.Value = val
 	this.next = emptyList
 	return this
 }
 
+func Cons(val any, rest IList) IList {
+	this := new(List)
+	this.Value = val
+	this.next = rest
+	return this
+}
+
 func (this *List) Conj(val any) IList {
-	new_head := New(val)
-	new_head.next = this
-	return new_head
+	return Cons(val, this)
 
 }