Update tutorial.md

robertmuth · Jun 28, 2024 · 2af01da · 2af01da
1 parent 3f99089
commit 2af01da
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diff --git a/FrontEndDocs/tutorial.md b/FrontEndDocs/tutorial.md
@@ -136,6 +136,7 @@ module(
 type Visitor = funtype(node ^$type) void
 
 @pub fun InorderTraversal(root MaybeNode, visitor Visitor) void:
+    -- return if the union root is a Leaf
     trylet node ^!Node = root, _:
         return
     do InorderTraversal(node^.left, visitor)