add a note

2023-12-09 07:15:58 +00:00 · 2023-12-09 07:15:58 +00:00 · 484c0744fb
commit 484c0744fb
parent 99621f071a
1 changed files with 2 additions and 0 deletions
--- a/day09/sol.tcl
+++ b/day09/sol.tcl
@ -26,6 +26,8 @@ proc predict {lst} {
 }

 proc unpredict {lst} {
+    # note: this could be
+    #   return [predict [lreverse $lst]]
    if {[allzeros $lst]} {
        return 0
    }