Expression statements and assignemnts are working

scripts/example.toy

@@ -52,18 +52,20 @@ print [:];
 //test nested compounds
 print [[1, 2, 3], [4, 5, 6], [7, 8, 9]];
 
-//not ready yet
+//var declarations
 var x = 31;
 var y : int = 42;
 var arr : [int] = [1, 2, 3, 42];
 var dict : [string, int] = ["hello": 1, "world":2];
 
-//print x;
-//print x + y;
-//print arr;
-//print dict;
+//printing expressions
+print x;
+print x + y;
+print arr;
+print dict;
 
 //test asserts at the end of the file
+assert x, "This won't be seen";
 assert true, "This won't be seen";
 assert false, "This is a failed assert, and will end execution";