updated to newer Scala 3 vararg pattern syntax

Signed-off-by: Konstantin Läufer <laufer@cs.luc.edu>

src/main/scala/execute.scala

@@ -69,7 +69,7 @@ object Execute:
       val lvalue = apply(store)(left)
       val rvalue = apply(store)(right)
       lvalue.set(rvalue.get)
-    case Sequence(statements @ _*) =>
+    case Sequence(statements*) =>
       statements.foldLeft(Cell.NULL)((c, s) => apply(store)(s))
     case While(guard, body) =>
       var gvalue = apply(store)(guard)
@@ -79,8 +79,8 @@ object Execute:
       Cell.NULL
     case New(Clazz(zuper, fields, methods)) =>
       // create an object based on the list of field names and methods
-      val fs = Map(fields.map(field => (field, Cell(0))): _*)
-      val ms = Map(methods: _*)
+      val fs = Map(fields.map(field => (field, Cell(0)))*)
+      val ms = Map(methods*)
       val z = zuper map ((z: Clazz) => apply(Map.empty)(New(z)).get.toOption.get)
       Cell(Right(Instance(z, fs, ms)))
     case Selection(receiver, field) =>
@@ -93,7 +93,7 @@ object Execute:
         rec.get.toOption.get.getField(field)
       else
         store("scope").get.toOption.get.getField(field)
-    case Message(receiver, method, arguments @ _*) =>
+    case Message(receiver, method, arguments*) =>
       // evaluate receiver expression to a Cell containing an Instance
       val rec = apply(store)(receiver)
       // look up method in the Instance's second component (method table)