-let inline private parent (i: int) : int = (i - 1) / 2
-let inline private left (i: int) : int = 2 * (i + 1) - 1
-let inline private right (i: int) : int = 2 * (i + 1)
+let inline private parent (i : int) : int = (i - 1) / 2
+let inline private left (i : int) : int = 2 * (i + 1) - 1
+let inline private right (i : int) : int = 2 * (i + 1)