--- a/progs/parser-combinators/comb2.sc	Sat Nov 04 18:28:09 2023 +0000
+++ b/progs/parser-combinators/comb2.sc	Sat Nov 11 10:08:33 2023 +0000
@@ -16,7 +16,8 @@
 
 case class ~[+A, +B](x: A, y: B)
 
-
+val a = (1, "2")
+val v = new ~(1, "2")
 
 type IsSeq[I] = I => Seq[_]