tracks/fsharp/exercises/all-your-base/Example.fs in trackler-2.2.1.44 vs tracks/fsharp/exercises/all-your-base/Example.fs in trackler-2.2.1.45

@@ -14,10 +14,13 @@
     | [] -> Some acc
     | digit::rest ->
         if digit <  0 then None else
         if digit >= b then None else
         loop (acc * b + digit) rest
-    if nums = [] then None else loop 0 nums
+
+    match nums with
+    | [] | 0::_ -> None
+    | _ -> loop 0 nums
 
 let rebase inB inDigits outB =
     if inB < 2 || outB < 2 then None else
     match fromBase inB inDigits with
     | None -> None
\ No newline at end of file